C4H4ClN3O2
161.55 g/mol
Pharmaceutical IntermediateWarning
5-CHLORO-1-METHYL-4-NITROIMIDAZOLE
CAS4897-25-0EC225-521-2
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
5-Chloro-1-methyl-4-nitroimidazole is a nitroimidazole derivative used as a pharmaceutical intermediate in the synthesis of azathioprine. It is a chlorinated, nitro-substituted heterocyclic compound.
Pharmaceutical intermediate for azathioprine 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
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Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 5-CHLORO-1-METHYL-4-NITROIMIDAZOLE (CAS 4897-25-0) is 2933.29.
HS code (international, 6-digit)
2933.29
EU CN code (8-digit)
2933 29 90
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
5-chloro-1-methyl-4-nitroimidazole
InChIKey
OSJUNMSWBBOTQU-UHFFFAOYSA-N
SMILES
CN1C=NC(=C1Cl)[N+](=O)[O-]
Synonyms (16)
- CMNI
- PCMNI
- Azathioprine EP Impurity C
- Azathioprine Imp. C (EP); 5-Chloro-1-methyl-4-nitroimidazole; Azathioprine Impurity C
- A(S50154-9)
- AZATHIOPRINE IMPURITY C
- S 50154-9
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