Li, Gang et al. published their research in Chemical Communications (Cambridge, United Kingdom) in 2019 | CAS: 110590-84-6

2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6) belongs to isoquinoline derivatives. The isoquinoline structure occurs in a considerable number of alkaloids in widely separated plant families. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Category: isoquinoline

Novel dithiano-thieno fused perylene diimides: synthesis, characterization and application in organic thin-film transistors (OTFTs) was written by Li, Gang;Li, Dandan;Liu, Xitong;Xu, Haixiao;Zhang, Jing;Wang, Shuaihua;Liu, Zhenhua;Tang, Bo. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2019.Category: isoquinoline This article mentions the following:

Three novel perylene diimides featuring [1,2]dithiine and sulfur annulation onto the PDI core and different branched alkyl chains have been designed and facilely synthesized. The organic thin-film transistor (OTFT) devices based on the as-synthesized compounds showed maximum electron mobilities of up to 0.008 cm2 V-1 s-1 under an ambient atm. In the experiment, the researchers used many compounds, for example, 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6Category: isoquinoline).

2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6) belongs to isoquinoline derivatives. The isoquinoline structure occurs in a considerable number of alkaloids in widely separated plant families. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Murray, Jeremy et al. published their research in ChemMedChem in 2014 | CAS: 491-30-5

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. The Pomeranz鈥揊ritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Formula: C9H7NO

Tailoring Small Molecules for an Allosteric Site on Procaspase-6 was written by Murray, Jeremy;Giannetti, Anthony M.;Steffek, Micah;Gibbons, Paul;Hearn, Brian R.;Cohen, Frederick;Tam, Christine;Pozniak, Christine;Bravo, Brandon;Lewcock, Joe;Jaishankar, Priyadarshini;Ly, Cuong Q.;Zhao, Xianrui;Tang, Yinyan;Chugha, Preeti;Arkin, Michelle R.;Flygare, John;Renslo, Adam R.. And the article was included in ChemMedChem in 2014.Formula: C9H7NO This article mentions the following:

Although they represent attractive therapeutic targets, caspases have so far proven recalcitrant to the development of drugs targeting the active site. Allosteric modulation of caspase activity is an alternate strategy that potentially avoids the need for anionic and electrophilic functionality present in most active-site inhibitors. Caspase-6 has been implicated in neurodegenerative disease, including Huntington’s and Alzheimer’s diseases. Herein we describe a fragment-based lead discovery effort focused on caspase-6 in its active and zymogen forms. Fragments were identified for procaspase-6 using surface plasmon resonance methods and subsequently shown by X-ray crystallog. to bind a putative allosteric site at the dimer interface. A fragment-merging strategy was employed to produce nanomolar-affinity ligands that contact residues in the L2 loop at the dimer interface, significantly stabilizing procaspase-6. Because rearrangement of the L2 loop is required for caspase-6 activation, our results suggest a strategy for the allosteric control of caspase activation with drug-like small mols. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Formula: C9H7NO).

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. The Pomeranz鈥揊ritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Formula: C9H7NO

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Wang, Kaikai et al. published their research in Molecules in 2022 | CAS: 3382-18-1

6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Reference of 3382-18-1

Facile Synthesis of Tricyclic 1,2,4-Oxadiazolines-Fused Tetrahydro-Isoquinolines from Oxime Chlorides with 3,4-Dihydroisoquinoline Imines was written by Wang, Kaikai;Li, Yanli;Zhang, Wei;Chen, Rongxiang;Ma, Xueji;Wang, Mingyue;Zhou, Nan. And the article was included in Molecules in 2022.Reference of 3382-18-1 This article mentions the following:

A mild and efficient strategy for the synthesis of tricyclic 1,2,4-oxadiazolines-fused tetrahydroisoquinolines derivatives via [3 + 2] cycloaddition reaction was reported. The reactions provided the functionalized tricyclic 1,2,4-oxadiazolines in high yields (up to 96%). This protocol was simple and easy to handle. Moreover, a gram-scale experiment further highlights the synthetic utility. The chem. structure of the product was determined by X-ray single-crystal structure anal. A possible mechanism for this transformation was proposed to explain the reaction process. In the experiment, the researchers used many compounds, for example, 6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1Reference of 3382-18-1).

6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Reference of 3382-18-1

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Zhao, Peng et al. published their research in Organic Letters in 2012 | CAS: 491-30-5

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Reference of 491-30-5

Rhodium(III)- and Ruthenium(II)-Catalyzed Olefination of Isoquinolones was written by Zhao, Peng;Niu, Rui;Wang, Fen;Han, Keli;Li, Xingwei. And the article was included in Organic Letters in 2012.Reference of 491-30-5 This article mentions the following:

NH and N-protected isoquinolones undergo Rh(III)-catalyzed oxidative olefination at the 8-position with terminal alkenes to afford alkenylated derivatives, e.g., I (R1 = H, Me, MeO, Cl; R2 = H, n-Pr, n-Bu, SiMe3). Complementary redox-neutral olefination of such isoquinolones using internal alkynes was achieved under ruthenium catalysis. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Reference of 491-30-5).

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Reference of 491-30-5

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Liu, Kexin et al. published their research in Journal of Environmental Science and Health, Part A in 2022 | CAS: 491-30-5

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. The Pomeranz鈥揊ritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Quality Control of 1-Hydroxyisoquinoline

Bioaugmentation of quinoline-degrading bacteria for coking wastewater treatment: performance and microbial community analysis was written by Liu, Kexin;Zhang, Yuxiu;Xu, Weichao. And the article was included in Journal of Environmental Science and Health, Part A in 2022.Quality Control of 1-Hydroxyisoquinoline This article mentions the following:

Ochrobactrum sp.XKL1, previously found to have the ability to efficiently degrade quinoline, was bioaugmented into a lab-scale A/O/O system to treat real coking wastewater. During the bioaugmentation stage, the removal of quinoline and pyridine of the O1 tank could be enhanced by 9.88% and 7.96%, resp. High-throughput sequencing anal. indicated that the addition of XKL1 could significantly affect the alteration of microbial community structure in the sludge. In addition, the relative abundance of Ochrobactrum has demonstrated a trend of increasing first followed by decreasing with the highest abundance of 7.87% attained on the 94th day. The bioaugmentation effects lasted for about 14 days after the strains was inoculated into the reactor. Although a decrease in the relative abundance of XKL1 was observed for a rather short period of time, the bioaugmented A/O/O system has been proven to be more effective in the removal of organic pollutants than the control. Hence, the results of this study indicated that the bioaugmentation with XKL1 is a feasible operational strategy that would be able to enhance the removal of NHCs in the treatment of coking wastewater with complex composition and high organic concentrations In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Quality Control of 1-Hydroxyisoquinoline).

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. The Pomeranz鈥揊ritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Quality Control of 1-Hydroxyisoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Achi, Ijeoma Theresa et al. published their research in Cells in 2022 | CAS: 2086-83-1

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Application of 2086-83-1

Multi-Target Potential of Berberine as an Antineoplastic and Antimetastatic Agent: A Special Focus on Lung Cancer Treatment. was written by Achi, Ijeoma Theresa;Sarbadhikary, Paromita;George, Blassan P;Abrahamse, Heidi. And the article was included in Cells in 2022.Application of 2086-83-1 This article mentions the following:

Despite therapeutic advancements, lung cancer remains the principal cause of cancer mortality in a global scenario. The increased incidence of tumor reoccurrence and progression and the highly metastatic nature of lung cancer are of great concern and hence require the investigation of novel therapies and/or medications. Naturally occurring compounds from plants serve as important resources for novel drugs for cancer therapy. Amongst these phytochemicals, Berberine, an alkaloid, has been extensively explored as a potential natural anticancer therapeutic agent. Several studies have shown the effectiveness of Berberine in inhibiting cancer growth and progression mediated via several different mechanisms, which include cell cycle arrest, inducing cell death by apoptosis and autophagy, inhibiting cell proliferation and invasion, as well as regulating the expression of microRNA, telomerase activity, and the tumor microenvironment, which usually varies for different cancer types. In this review, we aim to provide a better understanding of molecular insights of Berberine and its various derivative-induced antiproliferative and antimetastatic effects against lung cancer. In conclusion, the Berberine imparts its anticancer efficacy against lung cancers via modulation of several signaling pathways involved in cancer cell viability and proliferation, as well as migration, invasion, and metastasis. In the experiment, the researchers used many compounds, for example, 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1Application of 2086-83-1).

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Application of 2086-83-1

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Hsiao, Sheng-Mou et al. published their research in Scientific Reports in 2022 | CAS: 242478-37-1

(S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Name: (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate

Impact of mirabegron versus solifenacin on autonomic function and arterial stiffness in female overactive bladder syndrome: a randomized controlled trial was written by Hsiao, Sheng-Mou;Tu, Fung-Chao;Su, Ta-Chen;Wu, Pei-Chi;Lin, Ho-Hsiung. And the article was included in Scientific Reports in 2022.Name: (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate This article mentions the following:

The study aims to elucidate the impact of mirabegron vs. solifenacin on autonomic function and peripheral arterial conditions in women with overactive bladder syndrome (OAB). All consecutive women with OAB were randomized to receive 12 wk of mirabegron 25 mg or solifenacin 5 mg once per day. Heart rate variability, cardio-ankle vascular index, ankle-brachial pressure index, blood pressure, and heart rate were compared between the two groups. There were 87 women (mirabegron, n = 43; and solifenacin, n = 44) who completed 12-wk treatment and underwent heart rate variability examination Systolic blood pressure (median: – 4.5 to – 5.5 mmHg) and diastolic blood pressure (median: – 0.5 to – 3.5 mmHg) decreased after solifenacin treatment, and heart rate (median: + 2 bpm) increased after mirabegron treatment, despite of no between-group difference. In addition, posttreatment heart rate variability, cardio-ankle vascular index, and ankle-brachial pressure index did not differ compared with baseline; and there were no between-group differences. In conclusion, solifenacin might decrease blood pressure, and mirabegron might increase heart rate. Nonetheless, there were no significant impacts of 12-wk mirabegron vs. solifenacin treatment on autonomic function and arterial stiffness. In the experiment, the researchers used many compounds, for example, (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1Name: (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate).

(S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Name: (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Huang, Han-Jun et al. published their research in Journal of Pharmaceutical and Biomedical Analysis in 2022 | CAS: 2086-83-1

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.HPLC of Formula: 2086-83-1

Tetraphenylethylene sulfonate derivative as turn-on fluorescent sensor for berberine chloride detection in aqueous solution was written by Huang, Han-Jun;Gao, Si-Yu;Zhao, Ai-Juan;Ngeontae, Wittaya;Wu, Han-Chun;Wang, Fu-Min;Ren, Xiang-Kui. And the article was included in Journal of Pharmaceutical and Biomedical Analysis in 2022.HPLC of Formula: 2086-83-1 This article mentions the following:

A neg.-charged tetraphenylethylene derivative (TPE-SE) was designed and synthesized as turn-on fluorescent sensor for berberine chloride (BBC) detection in aqueous solution The fluorescent property and detection mechanism were elucidated by UV-vis absorption spectra, photoluminescence spectra, dynamic light scattering experiments The results reveal that the BBC can lead to aggregation-induced emission of TPE-SE due to the electrostatic interactions, endowing TPE-SE with excellent turn-on detecting ability, high selectivity and sensitivity to BBC. The detection limit is as low as 6.58 x 10-6M. These results should be applicable to fabricate special turn-on fluorescent sensors towards various antibiotics, and it is crucially important for achieving reasonable control and intake of small biomols. In the experiment, the researchers used many compounds, for example, 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1HPLC of Formula: 2086-83-1).

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.HPLC of Formula: 2086-83-1

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Busby, Michael et al. published their research in Journal of Physical Chemistry C in 2011 | CAS: 110590-84-6

2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. COA of Formula: C50H62N2O4

Interactions of Perylene Bisimide in the One-Dimensional Channels of Zeolite L was written by Busby, Michael;Devaux, Andre;Blum, Christian;Subramaniam, Vinod;Calzaferri, Gion;De Cola, Luisa. And the article was included in Journal of Physical Chemistry C in 2011.COA of Formula: C50H62N2O4 This article mentions the following:

Supramolecularly organized host guest systems were prepared by inserting three perylene dyes with differing end substituents into the nanosized channels of zeolite L (ZL) by gas-phase adsorption under vacuum conditions. The end substituents allowed controlling the core-to-core distances of the mols. in the channels. The three perylene dyes studied have very similar absorption and fluorescence spectra in diluted solutions, as well as fluorescence lifetimes 鈭?4 ns. Large ZL crystals in the size range of 1500-3000 nm in length and 鈭?000 nm in diameter as well as nanosized NZL crystals of 鈭?0 nm in length and diameter were used as hosts. Different loadings were studied. The photophys. properties of the materials were analyzed as suspensions in refractive index matching solvents, such as toluene or Et benzoic acid ester; as bulk materials in glass ampuls; and by time-, space-, and spectrally resolved single-crystal fluorescence microspectrocopy techniques. The inserted dyes can form J-aggregates if the structure of the perylene derivative allows for short distances between the electronic transition moments in an in-line arrangement. J-coupling was not seen for the mols. with substituents that keep them further apart. Aligned and stabilized J-aggregates in 1-dimensional channels provide new options for preparing optical devices, where coherent exciton delocalization over nanometer-to-micrometer scales may result in efficient photonic wires. The exciton coupling can be controlled by varying the mol. tail groups. In the experiment, the researchers used many compounds, for example, 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6COA of Formula: C50H62N2O4).

2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. COA of Formula: C50H62N2O4

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Zhang, Meng-Cheng et al. published their research in Organic Letters in 2022 | CAS: 607-32-9

5-Nitroisoquinoline (cas: 607-32-9) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.COA of Formula: C9H6N2O2

Highly Chemoselective Synthesis of Purino[3,2-c]oxazoles via the Asymmetric Dearomative [3 + 2] Cycloaddition of Purines with Donor-Acceptor Oxiranes was written by Zhang, Meng-Cheng;Wang, Dong-Chao;Wang, Hai-Ting;Qu, Gui-Rong;Guo, Hai-Ming. And the article was included in Organic Letters in 2022.COA of Formula: C9H6N2O2 This article mentions the following:

A Ni(II)/bisoxazoline-catalyzed asym. dearomative [3 + 2] cycloaddition of substituted purines with donor-acceptor oxiranes was developed. This reaction, which proceeds via highly chemoselective C-C bond cleavage of the oxiranes, accesses chiral purino[3,2-c]oxazole compounds (up to 99% ee after enrichment via crystallization). The electronic effects of the purine ring determine the reactivity of the substrate. The general applicability of this method was illustrated by gram-scale synthesis, the diverse transformations of the product, and the promising biol. activities of selected derivatives In the experiment, the researchers used many compounds, for example, 5-Nitroisoquinoline (cas: 607-32-9COA of Formula: C9H6N2O2).

5-Nitroisoquinoline (cas: 607-32-9) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.COA of Formula: C9H6N2O2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem