C9H9NO2
163.17 g/mol
Pharmaceutical IntermediateWarning
3,4-Dihydro-7-hydroxy-2(1H)-quinolinone
CAS22246-18-0EC606-966-5
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
7-Hydroxy-3,4-dihydrocarbostyril is a quinoline derivative used as a pharmaceutical intermediate in chemical synthesis and manufacturing.
pharmaceutical intermediatebuilding block for organic synthesis
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
SimilarStructure SimilarSimilarity 0.73
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pharmaceutical intermediate
Referencesame scaffold
7-Methoxy-3,4-dihydroquinolin-2(1H)-one
CAS22246-17-9
pharmaceutical intermediate
Referencesame scaffold
Carteolol hydrochloride
CAS51781-21-6
pharmaceutical raw material
Referencesame scaffold
3,4-Dihydro-7-(4-chlorobutoxy)-2(1H)-quinolinone
CAS120004-79-7
pharmaceutical raw material
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 3,4-Dihydro-7-hydroxy-2(1H)-quinolinone (CAS 22246-18-0) is 2933.79.
HS code (international, 6-digit)
2933.79
EU CN code (8-digit)
2933 79 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
7-hydroxy-3,4-dihydro-1H-quinolin-2-one
InChIKey
LKLSFDWYIBUGNT-UHFFFAOYSA-N
SMILES
C1CC(=O)NC2=C1C=CC(=C2)O
Synonyms (28)
- 8HJ
- ARIPIPRAZOLE IMPURITY A (EP IMPURITY)
- Aripiprazole EP Impurity A
- 3,4-dihydroquinoline-2,7-diol
- 7-Hydroxy-2-(1H)-Quinolinone
- ARIPIPRAZOLE IMPURITY A
- Brexpiprazole Impurity 5
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