C6H4ClN3
153.57 g/mol
Pharmaceutical IntermediateDanger
4-Chloro-7H-pyrrolo[2,3-d]pyrimidine
CAS3680-69-1EC628-079-2
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
4-Chloro-7H-pyrrolo[2,3-d]pyrimidine is a chemical compound used as a pharmaceutical intermediate. It features a heterocyclic ring system and a chlorine substituent, and is commonly employed in the synthesis of active pharmaceutical ingredients.
pharmaceutical intermediate
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
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pharmaceutical intermediate
Referencesame scaffold
4-Methyl-7H-pyrrolo[2,3-d]pyrimidine
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Referencesame scaffold
2-Amino-4-chloropyrrolo[2,3-d]pyrimidine
CAS84955-31-7
pharmaceutical intermediate
Referencesame scaffold
2,4-Dichloro-1H-pyrrolo[2,3-d]pyrimidine
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Safety Reference
Danger
H301Toxic if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Chloro-7H-pyrrolo[2,3-d]pyrimidine (CAS 3680-69-1) is 2933.59.
HS code (international, 6-digit)
2933.59
EU CN code (8-digit)
2933 59 95
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-7H-pyrrolo[2,3-d]pyrimidine
InChIKey
BPTCCCTWWAUJRK-UHFFFAOYSA-N
SMILES
C1=CNC2=C1C(=NC=N2)Cl
Synonyms (12)
- 6-Chloro-7-deazapurine
- Chloro-7-deazapurine
- Tofacitinib Impurity 06
- tofacitinib intermediate
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