C17H19ClN4O4S
410.9 g/mol
APIDanger
Sildenafil chlorosulfonyl
CAS139756-22-2EC604-161-3
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Sildenafil chlorosulfonyl is a chemical compound that serves as an intermediate in pharmaceutical manufacturing. It features a complex aromatic structure containing heterocyclic rings and a sulfonyl chloride functional group.
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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Referencesame scaffold
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Safety Reference
Danger
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H413May cause long lasting harmful effects to aquatic life
Customs Tariff Classification
The international HS code for Sildenafil chlorosulfonyl (CAS 139756-22-2) 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
4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-5-yl)benzenesulfonyl chloride
InChIKey
RVVOSOSBFSYZDM-UHFFFAOYSA-N
SMILES
CCCC1=NN(C2=C1N=C(NC2=O)C3=C(C=CC(=C3)S(=O)(=O)Cl)OCC)C
Synonyms (17)
- Sildenafil Impurity 7
- Sildenafil chlorosulfonyl
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