ChemicalBook >   Product Catalog >  Pharmaceutical intermediates >  Heterocyclic compound >  Isoquinoline compounds

Isoquinoline compounds

More
Less

Isoquinoline is a heterocyclic compound containing a benzene ring and a pyridine ring. It’s the isomer of quinoline and the product of naphthalene after its CH group on β position is substituted by N atoms. It is colorless to pale yellow liquid or flaky crystal and have a pungent odor similar to anise oil and benzaldehyde along with its hydroscopicity and relatively stronger alkaline than quinoline. Isoquinoline is pretty active so that it can participate in nucleophilic and electrophilic reactions as well as oxidation and reduction. The basic structures of many alkaloids such as berberine, papaverine and morphine contain isoquinoline and hydrogenated isoquinoline.
Applications: isoquinoline can be used as a solvent of polyimide film; also as raw materials of organic conductor, dyes, photopigment, insecticides, alkaloids, pharmaceutical and fungicides and rubber vulcanization accelerator. It is used in the preparation of pyridine carboxylic acid after its oxidation and isoquinoline derivatives; isoquinoline hydrochloride is a chemical reagent for the determination of zinc, cadmium, cobalt, copper, etc.

Preparation:
(1) in the Bischler method proposed in 1893, 3,4-dihydroisoquinoline is generated  in the dehydration and condensated ringclosing of β- phenylethylamine under the effect of phosphorus pentoxide (or ZnCl2, POCl3, etc.) as a dehydrating agent; then it’s dehydrogenized to produce isoquinoline in the catalysis of palladium at 190℃.
(2) rearrangement of cinnamaldehyde oxime: isoquinoline can be obtained in the Beckmann rearrangement of cinnamaldehyde oxime under the effect of the phosphorus pentoxide (or sulfuric acid, polyphosphoric acid), followed by dehydration ringclosing.

Click on the specific product, view the latest prices of the products, information, serving information

Structure:
Chemical Name:
1,2,3,4-TETRAHYDROISOQUINOLINE
CAS:
91-21-4
MF:
C9H11N
Structure:
Chemical Name:
7-Bromoisoquinoline
CAS:
58794-09-5
MF:
C9H6BrN
Structure:
Chemical Name:
6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride
CAS:
2328-12-3
MF:
C11H16ClNO2
Structure:
Chemical Name:
5-Aminoisoquinoline
CAS:
1125-60-6
MF:
C9H8N2
Structure:
Chemical Name:
5-Bromo-8-nitroisoquinoline
CAS:
63927-23-1
MF:
C9H5BrN2O2
Structure:
Chemical Name:
1,3-Dichloroisoquinoline
CAS:
7742-73-6
MF:
C9H5Cl2N
Structure:
Chemical Name:
3-BROMOISOQUINOLINE
CAS:
34784-02-6
MF:
C9H6BrN
Structure:
Chemical Name:
Isoquinoline-3-carboxylic acid
CAS:
6624-49-3
MF:
C10H7NO2
Structure:
Chemical Name:
ISOQUINOLIN-3-AMINE
CAS:
25475-67-6
MF:
C9H8N2
Structure:
Chemical Name:
6,7-Dimethoxy-3,4-dihydroisoquinoline hydrochloride
CAS:
20232-39-7
MF:
C11H14ClNO2
Structure:
Chemical Name:
ISOQUINOLINE-5-CARBOXYLIC ACID
CAS:
27810-64-6
MF:
C10H7NO2
Structure:
Chemical Name:
ISOQUINOLINE-3-CARBOXYLIC ACID
CAS:
203626-75-9
MF:
C10H7NO2
Structure:
Chemical Name:
ISOQUINOLINE-5-CARBALDEHYDE
CAS:
80278-67-7
MF:
C10H7NO
Structure:
Chemical Name:
6-AMINOISOQUINOLINE
CAS:
23687-26-5
MF:
C9H8N2
Structure:
Chemical Name:
6-bromo-1,2,3,4-tetrahydroisoquinoline
CAS:
226942-29-6
MF:
C9H10BrN
Structure:
Chemical Name:
4-Aminoisoquinoline
CAS:
23687-25-4
MF:
C9H8N2
Structure:
Chemical Name:
1-Bromoisoquinoline
CAS:
1532-71-4
MF:
C9H6BrN
Structure:
Chemical Name:
6-Bromo-1-chloroisoquinoline
CAS:
205055-63-6
MF:
C9H5BrClN
Structure:
Chemical Name:
5-Bromo-4-methylisoquinoline
CAS:
651310-24-6
MF:
C10H8BrN
Structure:
Chemical Name:
5-AMINO-2H-ISOQUINOLIN-1-ONE
CAS:
93117-08-9
MF:
C9H8N2O
Structure:
Chemical Name:
6,7-Dimethoxy-3,4-dihydroisoquinoline
CAS:
3382-18-1
MF:
C11H13NO2
Structure:
Chemical Name:
5-BROMO-8-ISOQUINOLINEAMINE
CAS:
90721-35-0
MF:
C9H7BrN2
Structure:
Chemical Name:
5,6,7,8-TETRAHYDROISOQUINOLINE
CAS:
36556-06-6
MF:
C9H11N
Structure:
Chemical Name:
Isoquinoline, 6-chloro- (6CI,9CI)
CAS:
62882-02-4
MF:
C9H6ClN
Structure:
Chemical Name:
Phenylisoquinoline
CAS:
3297-72-1
MF:
C15H11N
Structure:
Chemical Name:
6-Isoquinolinecarbonitrile(9CI)
CAS:
106778-42-1
MF:
C10H6N2
Structure:
Chemical Name:
1-methyl-1,2,3,4-tetrahydroisoquinoline
CAS:
4965-09-7
MF:
C10H13N
Structure:
Chemical Name:
3-isoquinolinecarboxaldehyde
CAS:
5470-80-4
MF:
C10H7NO
Structure:
Chemical Name:
5-CHLOROISOQUINOLINE
CAS:
5430-45-5
MF:
C9H6ClN
Structure:
Chemical Name:
ISOQUINOLINE-1-CARBALDEHYDE
CAS:
4494-18-2
MF:
C10H7NO
Structure:
Chemical Name:
7-Hydroxy-6-methoxy-3,4-dihydroisoquinoline
CAS:
4602-73-7
MF:
C10H11NO2
Structure:
Chemical Name:
1,4-DICHLOROISOQUINOLINE
CAS:
15298-58-5
MF:
C9H5Cl2N
Structure:
Chemical Name:
ISOQUINOLINE-3-CARBOXYLIC ACID HYDRATE
CAS:
207399-25-5
MF:
C10H9NO3
Structure:
Chemical Name:
6-Methoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride
CAS:
57196-62-0
MF:
C10H14ClNO
Structure:
Chemical Name:
Isoquinolin-4-ol
CAS:
3336-49-0
MF:
C9H7NO
Structure:
Chemical Name:
Isoquinoline-4-carbaldehyde
CAS:
22960-16-3
MF:
C10H7NO
Structure:
Chemical Name:
1-CHLORO-4-HYDROXYISOQUINOLINE
CAS:
3336-43-4
MF:
C9H6ClNO
Structure:
Chemical Name:
6-bromoisoquinolin-3-amine
CAS:
891785-28-7
MF:
C9H7BrN2
Structure:
Chemical Name:
4-BROMO-1(2H)-ISOQUINOLONE
CAS:
3951-95-9
MF:
C9H6BrNO
Structure:
Chemical Name:
6-BROMO-3-CHLOROISOQUINOLINE
CAS:
552331-06-3
MF:
C9H5BrClN
Structure:
Chemical Name:
6-BROMOISOQUINOLIN-1-YLAMINE
CAS:
215453-26-2
MF:
C9H7BrN2
Structure:
Chemical Name:
ETHYL ISOQUINOLINE-3-CARBOXYLATE
CAS:
50458-79-2
MF:
C12H11NO2
Structure:
Chemical Name:
ISOQUINOLINE-4-CARBONITRILE
CAS:
34846-65-6
MF:
C10H6N2
Structure:
Chemical Name:
7-CHLOROISOQUINOLINE
CAS:
34784-06-0
MF:
C9H6ClN
Structure:
Chemical Name:
6-isoquinolinecarboxylic acid
CAS:
106778-43-2
MF:
C10H7NO2
Structure:
Chemical Name:
7-Hydroxyquinolinone
CAS:
70500-72-0
MF:
C9H7NO2
Structure:
Chemical Name:
Decahydroisoquinoline
CAS:
6329-61-9
MF:
C9H17N
Structure:
Chemical Name:
3-Methylisoquinoline
CAS:
1125-80-0
MF:
C10H9N
Structure:
Chemical Name:
5,7-Dichloro-1,2,3,4-Tetrahydroisoquinoline-6-Carboxylic Acid Hydrochloride
CAS:
1289646-93-0
MF:
C10H10Cl3NO2
Structure:
Chemical Name:
4-Chloroisoquinoline
CAS:
1532-91-8
MF:
C9H6ClN
Structure:
Chemical Name:
3,4-Dihydro-2H-isoquinolin-1-one
CAS:
1196-38-9
MF:
C9H9NO
Structure:
Chemical Name:
ISOQUINOLINE-8-CARBALDEHYDE
CAS:
787615-01-4
MF:
C10H7NO
Structure:
Chemical Name:
5-CYANOISOQUINOLINE
CAS:
27655-41-0
MF:
C10H6N2
Structure:
Chemical Name:
5-BROMO-1-CHLOROISOQUINOLINE
CAS:
34551-41-2
MF:
C9H5BrClN
Structure:
Chemical Name:
6-Isoquinolinecarboxaldehyde (9CI)
CAS:
173089-81-1
MF:
C10H7NO
Structure:
Chemical Name:
4-Quinolinol,6-amino-(9CI)
CAS:
56717-02-3
MF:
C9H8N2O
Structure:
Chemical Name:
2(1H)-Quinolinone,6-amino-(9CI)
CAS:
79207-68-4
MF:
C9H8N2O
Structure:
Chemical Name:
6-AMINO-3,4-DIHYDRO-2H-ISOQUINOLIN-1-ONE
CAS:
22246-00-0
MF:
C9H10N2O
Structure:
Chemical Name:
4-Methylisoquinoline
CAS:
1196-39-0
MF:
C10H9N
Structure:
Chemical Name:
1,5-DICHLOROISOQUINOLINE
CAS:
70810-23-0
MF:
C9H5Cl2N
Structure:
Chemical Name:
3-(Chloromethyl)isoquinoline
CAS:
147937-36-8
MF:
C10H8ClN
Structure:
Chemical Name:
1,7-Dichloroisoquinoline
CAS:
70810-24-1
MF:
C9H5Cl2N
Structure:
Chemical Name:
5-Fluoroisoquinoline
CAS:
394-66-1
MF:
C9H6FN
Structure:
Chemical Name:
5-BROMO-8-CHLOROISOQUINOLINE
CAS:
956003-79-5
MF:
C9H5BrClN
Structure:
Chemical Name:
1-ISOQUINOLINEMETHANOL
CAS:
27311-63-3
MF:
C10H9NO
Structure:
Chemical Name:
5-Isoquinolinamine,3-chloro-(9CI)
CAS:
58142-49-7
MF:
C9H7ClN2
Structure:
Chemical Name:
3,4-DIBROMOISOQUINOLINE
CAS:
36963-44-7
MF:
C9H5Br2N
Structure:
Chemical Name:
7-Nitroisoquinoline
CAS:
13058-73-6
MF:
C9H6N2O2
Structure:
Chemical Name:
6-FLUOROISOQUINOLINE
CAS:
1075-11-2
MF:
C9H6FN
Structure:
Chemical Name:
4-Methoxyisoquinoline
CAS:
36034-54-5
MF:
C10H9NO
Structure:
Chemical Name:
7,8-DIHYDROISOQUINOLIN-5(6H)-ONE
CAS:
21917-86-2
MF:
C9H9NO
Structure:
Chemical Name:
8-Isoquinolinecarbonitrile(9CI)
CAS:
362606-11-9
MF:
C10H6N2
Structure:
Chemical Name:
5-BROMOISOQUINOLIN-1-AMINE
CAS:
852570-80-0
MF:
C9H7BrN2
Structure:
Chemical Name:
(Isoquinolin-7-yl)methanamine
CAS:
1053655-96-1
MF:
C10H10N2
Structure:
Chemical Name:
2-ETHYL-1,2,3,4-TETRAHYDRO-ISOQUINOLINE-3-CARBOXYLIC ACID
CAS:
1022919-86-3
MF:
C12H15NO2
Structure:
Chemical Name:
Isoquinoline-4-carboxylic acid
CAS:
7159-36-6
MF:
C10H7NO2
Structure:
Chemical Name:
6,7-DIHYDRO-5H-ISOQUINOLIN-8-ONE
CAS:
21917-88-4
MF:
C9H9NO
Structure:
Chemical Name:
3-AMINO-2-METHYLQUINOLINE
CAS:
21352-22-7
MF:
C10H10N2
Structure:
Chemical Name:
7-methylisoquinoline
CAS:
54004-38-5
MF:
C10H9N
Structure:
Chemical Name:
Isoquinoline, 1-ethyl-
CAS:
7661-60-1
MF:
C11H11N
Structure:
Chemical Name:
5-methoxyisoquinoline
CAS:
90806-58-9
MF:
C10H9NO
Structure:
Chemical Name:
ISOQUINOLINE-8-CARBOXYLIC ACID
CAS:
61563-43-7
MF:
C10H7NO2
Structure:
Chemical Name:
Isoquinolin-3-ylmethanamine
CAS:
132833-03-5
MF:
C10H10N2
Structure:
Chemical Name:
4-Methylisoquinolin-5-amine
CAS:
194032-18-3
MF:
C10H10N2
Structure:
Chemical Name:
7-Isoquinolinecarboxaldehyde (6CI,9CI)
CAS:
87087-20-5
MF:
C10H7NO
Structure:
Chemical Name:
5-Isoquinolinamine,7-chloro-(9CI)
CAS:
608515-70-4
MF:
C9H7ClN2
Structure:
Chemical Name:
isoquinolin-3-ylmethanol
CAS:
76884-34-9
MF:
C10H9NO
Structure:
Chemical Name:
6,7-dimethoxy-1-phenyl-1,2,3,4-tetrahydroisoquinoline
CAS:
4118-36-9
MF:
C17H19NO2
Structure:
Chemical Name:
4-Bromo-6-methylisoquinoline
CAS:
1204298-52-1
MF:
C10H8BrN
Structure:
Chemical Name:
TRANS-DECAHYDROISOQUINOLINE
CAS:
2744-09-4
MF:
C9H17N
Structure:
Chemical Name:
3,4-DIHYDROISOQUINOLINE
CAS:
3230-65-7
MF:
C9H9N
Structure:
Chemical Name:
p-[2-(3,4-dihydro-7-methoxy-4,4-dimethyl-1,3-dioxo-2(1H)-isoquinolyl)ethyl]benzenesulphonamide
CAS:
33456-68-7
MF:
C20H22N2O5S
Structure:
Chemical Name:
4-Fluoroisoquinoline
CAS:
394-67-2
MF:
C9H6FN
Structure:
Chemical Name:
7-Isoquinolinecarbonitrile(9CI)
CAS:
223671-92-9
MF:
C10H6N2
Structure:
Chemical Name:
7-isoquinolinecarboxylic acid
CAS:
221050-96-0
MF:
C10H7NO2
Structure:
Chemical Name:
(Isoquinolin-6-yl)methanamine
CAS:
1053655-94-9
MF:
C10H10N2
Structure:
Chemical Name:
1-ISOQUINOLIN-1-YLMETHANAMINE DIHYDROCHLORIDE
CAS:
40615-08-5
MF:
C10H10N2
Structure:
Chemical Name:
1,3-DIBROMOISOQUINOLINE
CAS:
53987-60-3
MF:
C9H5Br2N
Structure:
Chemical Name:
4-NITROISOQUINOLINE
CAS:
36073-93-5
MF:
C9H6N2O2
Structure:
Chemical Name:
8-METHYL-ISOQUINOLINE
CAS:
62882-00-2
MF:
C10H9N