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Dayang Chem (Hangzhou) Co., Ltd.
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Product Name: 6,7-Dimethoxy-3,4-dihydroisoquinoline hydrochloride
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Henan Tianfu Chemical Co., Ltd.
China
Product Name: 6,7-Dimethoxy-3,4-dihydroisoquinoline hydrochloride
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Purity: 99.0%
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20232-39-7

20232-39-7 structure

20232-39-7 structure

Name: 6,7-Dimethoxy-3,4-dihydroisoquinoline hydrochloride
Chemical Name: 6,7-dimethoxy-3,4-dihydroisoquinoline,hydrochloride
CAS Number: 20232-39-7
Molecular Formula: C₁₁H₁₄ClNO₂
Molecular Weight: 227.687
Catalog: Pharmaceutical intermediate Heterocyclic compound Isoquinoline compound
Create Date: 2018-12-05 21:18:50
Modify Date: 2026-07-17 16:34:38

Name	6,7-dimethoxy-3,4-dihydroisoquinoline,hydrochloride
Synonyms	6,7-Dimethoxy-3,4-dihydroisoquinoline hydrochloride (1:1) MFCD00143492 BB_NC-1918 3,4-dihydro-6,7-dimethoxy-Isoquinoline hydrochloride (1:1) Isoquinoline, 3,4-dihydro-6,7-dimethoxy-, hydrochloride (1:1) 6,7-Dimethoxy-3,4-dihydro-isochinolin,Hydrochlorid 3,4-Dihydro-6,7-dimethoxy-isoquinoline HCl 6,7-diMethoxy-3,4-dihydroisoquinoline hydrochloride salt 6,7-DIMETHOXY-3,4-DIHYDROISOQUINOLINE HYDROCHLORIDE HYDRATE EINECS 213-573-9 6,7-Dimethoxy-3,4-dihydroisoquinolinehydrochloride 6,7-Dimethoxy-3,4-dihydroisoquinolin-2-ium chloride 6,7-DIMETHOXY-3,4-DIHYDROISOQUINOLINE HYDROCHLORIDE 6-Methoxy-7-hydroxy-3,4-dihydroisoquinoline hydrochloride 6,7-Dimethoxy-3,4-dihydroisoquinolineHClhydrate 3,4-dihydro-6,7-dimethoxy-isoquinolinhydrochloride 6,7-Dimethoxy-3,4-dihydroisoquinoline, HCl 3,4-dihydro-6,7-dimethoxyisoquinoline hydrochloride Tetrabenazine Impurity 2 Tetrabenazine Impurity 5 6,7-Dimethoxy-3,4-dihydroisoquinoline Hydrochloride > 6,7-dimethoxy-3,4-dihydroisoquinolinium chloride 6,7-DiMethoxy-3,4-dihydroisoquinoline hydrochlorid 3,4-dihydro-6,7-dimethoxyisoquinolinehydrochloride Isoquinoline,3,4-dihydro-6,7-diMethoxy-, hydrochloride (1:1) 6,7-Dimethoxy-3,4-dihydroisoquinoline hydrochloride ISO 9001：2015 REACH 6,7-DIMETHOXY-3,4-DIHYDRO ISOQUINOLINE HYDROCHLORIDE Isoquinoline,3,4-dihydro-6,7-dimethoxy-,hydrochloride 6,7-Dimethoxy-3,4-dihydroisoquinoline Hydrochloride 6,7-dimethoxy-3,4-dihydroisoquinoline hydrate hydrochloride 6,7-Dimethoxy-3,4-dihydroisoquinoline hydrochloride hydrate 6,7-dimethoxy-3,4-dihydro-isoquinoline,hydrochloride 6,7-dimethoxy-3,4-dihydroisoquinolinium hydrochloride 6,7-Dimethoxy-3,4-dihydroisochinolinhydrochlorid

Boiling Point	322.9ºC at 760 mmHg
Melting Point	198-202 °C
Molecular Formula	C₁₁H₁₄ClNO₂
Molecular Weight	227.687
Flash Point	122ºC
Exact Mass	227.071304
PSA	30.82000
LogP	1.91640
Vapour Pressure	0.000513mmHg at 25°C
Index of Refraction	1.548
Storage condition	Room temperature.

CHEMICAL IDENTIFICATION

RTECS NUMBER :: NW7625000

CHEMICAL NAME :: Isoquinoline, 3,4-dihydro-6,7-dimethoxy-, hydrochloride

CAS REGISTRY NUMBER :: 20232-39-7

LAST UPDATED :: 198502

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C11-H13-N-O2.Cl-H

MOLECULAR WEIGHT :: 227.71

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 185 mg/kg

TOXIC EFFECTS :: Behavioral - altered sleep time (including change in righting reflex) Behavioral - convulsions or effect on seizure threshold Behavioral - changes in motor activity (specific assay)

REFERENCE :: YKKZAJ Yakugaku Zasshi. Journal of Pharmacy. (Nippon Yakugakkai, 2-12-15 Shibuya, Shibuya-ku, Tokyo 150, Japan) No.1- 1881- Volume(issue)/page/year: 88,1197,1968

Hazard Codes	Xi
Risk Phrases	R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Phrases	24/25
WGK Germany	3
HS Code	2933499090

64-18-6 structure

64-18-6

120-20-7 structure

120-20-7

~%

20232-39-7 structure

20232-39-7

Literature: Phytochemistry (Elsevier), , vol. 22, # 9 p. 2101 - 2102

Precursor 2
64-18-6 120-20-7
DownStream 2
3382-18-1 67455-70-3

HS Code	2933499090
Summary	2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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