C14H14O5S2
326.4 g/mol
Pharmaceutical IntermediateDanger
P-Toluenesulfonic anhydride
CAS4124-41-8EC223-926-9
Category
Pharmaceutical Intermediate
Compound Class
Aromatic
Primary Use
Pharmaceutical Intermediate
p-Toluenesulfonic anhydride is an organic compound derived from p-toluenesulfonic acid. It serves as a tosylating agent in organic synthesis, primarily used in the pharmaceutical industry as an intermediate for manufacturing active pharmaceutical ingredients.
Pharmaceutical intermediateTosylating agent in organic 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
Danger
H314Causes severe skin burns and eye damage
Customs Tariff Classification
The international HS code for P-Toluenesulfonic anhydride (CAS 4124-41-8) is 2904.99.
HS code (international, 6-digit)
2904.99
EU CN code (8-digit)
2904 99 00
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-methylphenyl)sulfonyl 4-methylbenzenesulfonate
InChIKey
PDVFSPNIEOYOQL-UHFFFAOYSA-N
SMILES
CC1=CC=C(C=C1)S(=O)(=O)OS(=O)(=O)C2=CC=C(C=C2)C
Synonyms (21)
- 4-Toluenesulfonic anhydride
- Toluene-4-sulfonic anhydride
- Toluene-p-sulphonic anhydride
- p-Toluenesulfonic anhydride
- p-Toluenesulphonic anhydride
- p-toluensulfonic anhydride
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