CClNO3S
141.53 g/mol
Research ReagentDanger
Chlorosulfonyl isocyanate
CAS1189-71-5EC214-715-2
Category
Research Reagent
Compound Class
Other
Primary Use
Research Compound
Chlorosulfonyl isocyanate (CSI) is a versatile reagent used in organic synthesis, particularly for beta-lactam formation. It is a reactive compound employed in laboratory and research settings.
reagent for beta-lactam 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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ReferenceSame Category
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Safety Reference
Danger
H302Harmful if swallowed
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H330Fatal if inhaled
H332Harmful if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
Customs Tariff Classification
The international HS code for Chlorosulfonyl isocyanate (CAS 1189-71-5) is 2853.90.
HS code (international, 6-digit)
2853.90
EU CN code (8-digit)
2853 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
N-(oxomethylidene)sulfamoyl chloride
InChIKey
WRJWRGBVPUUDLA-UHFFFAOYSA-N
SMILES
C(=NS(=O)(=O)Cl)=O
Synonyms (23)
- Chlorosulfonyl isocyanate
- Chlorosulphonyl isocyanate
- Isocyanatidosulfuryl chloride
- N-Carbonylsulfamyl chloride
- N-Chlorosulfonyl isocyanate
- N-carbonylsulphamoyl chloride
- Sulfonyl chloride isocyanate
- Sulfuryl chloride isocyanate
- chlorosufonyl isocyanate
- chlorosulfonyl isocyanic acid
- chlorosulfonyl isocynate
- chlorsulfonyl isocyanate
- isocyanatosulphuryl chloride
- sulfonyl isocyanate chloride
- sulfurisocyanatidic chloride
- sulfurisocyanatidoyl chloride
- sulphonyl isocyanate chloride
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