C5H2ClF2N
149.52 g/mol
Pharmaceutical IntermediateWarning
5-Chloro-2,3-difluoropyridine
CAS89402-43-7EC410-090-7
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
5-Chloro-2,3-difluoropyridine is a fluorinated pyridine derivative used primarily as a building block in pharmaceutical manufacturing. It is characterized by a halogen-substituted aromatic ring structure.
pharmaceutical intermediatechemical synthesis reagent
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
ReferenceSame Category
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CAS89407-97-6
pharmaceutical intermediate
ReferenceSame Category
6-BROMO-3-METHYLPYRIDIN-2-AMINE
CAS89466-16-0
pharmaceutical intermediate
ReferenceSame Category
2-Chloro-4-methyl-6-methylsulfanylpyrimidine
CAS89466-59-1
pharmaceutical intermediate
ReferenceSame Category
3-Methylpyridine-4-boronic acid
CAS894808-72-1
pharmaceutical intermediate
Safety Reference
Warning
H226Flammable liquid and vapour
H302Harmful if swallowed
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 5-Chloro-2,3-difluoropyridine (CAS 89402-43-7) is 2933.39.
HS code (international, 6-digit)
2933.39
EU CN code (8-digit)
2933 39 99
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-2,3-difluoropyridine
InChIKey
PERMDYZFNQIKBL-UHFFFAOYSA-N
SMILES
C1=C(C=NC(=C1F)F)Cl
Synonyms (5)
- 2,3-Difluoro-5-chloropyridine
- 3-chloro-5,6-difluoropyridine
- 5-Chloro-2,3-difluoropyridine
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