C4H5ClN4
144.56 g/mol
Pharmaceutical IntermediateWarning
4-Chloro-2,6-diaminopyrimidine
CAS156-83-2EC205-863-9
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
4-Chloro-2,6-diaminopyrimidine is an organohalogen compound and a member of pyrimidines, used as an intermediate in pharmaceutical 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
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Chloro-2,6-diaminopyrimidine (CAS 156-83-2) 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
6-chloropyrimidine-2,4-diamine
InChIKey
QJIUMVUZDYPQRT-UHFFFAOYSA-N
SMILES
C1=C(N=C(N=C1Cl)N)N
Synonyms (20)
- 2ZX
- CAAP
- 6-Chloropyrimidine-2,4-diamine; Minoxidil Imp. B (EP); Minoxidil Impurity B
- Minoxidil EP Impurity B
- Minoxidil impurity B [EP impurity]
- 2,6-diamino-chloropyrimidine
- 4ms0
- Minoxidil Impurity B
- Minoxidil impurity 2
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