C11H7ClN4O2
262.65 g/mol
Pharmaceutical IntermediateWarning
6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one
CAS43200-81-3EC256-139-4
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
This compound is a pharmaceutical intermediate featuring a pyrrolopyrazinone core substituted with a chloropyridinyl group and a hydroxyl group. It is primarily used as a building block in the synthesis of active pharmaceutical ingredients.
pharmaceutical intermediateresearch compound
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
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Referencesame scaffold
Rp-48497
CAS148891-53-6
pharmaceutical raw material
Safety Reference
Warning
H302Harmful if swallowed
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for 6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one (CAS 43200-81-3) 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
6-(5-chloro-2-pyridinyl)-7-hydroxy-7H-pyrrolo[3,4-b]pyrazin-5-one
InChIKey
FUUXOEKDNNWZTR-UHFFFAOYSA-N
SMILES
C1=CC(=NC=C1Cl)N2C(C3=NC=CN=C3C2=O)O
Synonyms (26)
- (7RS)-6-(5-Chloropyridin-2-yl)-7-hydroxy-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-one; Zopiclone Imp. B (EP); Zopiclone Impurity B
- Zopiclone EP Impurity B
- Eszopiclone Impurity B
- RP-29753, (RS)-
- ZOPICLONE ALCOHOL
- Zopiclone impurity B
- Zopiclone impurity B CRS
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