C13H10ClN3O2S
307.76 g/mol
Pharmaceutical IntermediateWarning
4-Chloro-7-(p-toluenesulfonyl)-7H-pyrrolo[2,3-d]pyrimidine
CAS479633-63-1EC811-000-2
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
This compound is a chlorinated pyrrolopyrimidine derivative bearing a methylphenylsulfonyl substituent, commonly used as a pharmaceutical intermediate in the synthesis of kinase inhibitors.
Intermediate for kinase inhibitor 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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Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for 4-Chloro-7-(p-toluenesulfonyl)-7H-pyrrolo[2,3-d]pyrimidine (CAS 479633-63-1) is 2935.90.
HS code (international, 6-digit)
2935.90
EU CN code (8-digit)
2935 90 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
4-chloro-7-(4-methylphenyl)sulfonylpyrrolo[2,3-d]pyrimidine
InChIKey
BTOJSYRZQZOMOK-UHFFFAOYSA-N
SMILES
CC1=CC=C(C=C1)S(=O)(=O)N2C=CC3=C2N=CN=C3Cl
Synonyms (16)
- Tofacitinib Impurity 09
- Tofacitinib Impurity D
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