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Sulfur trioxide-pyridine

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Sulfur trioxide-pyridine molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 5 grades and pack sizes of Sulfur trioxide-pyridine (CAS 26412-87-3). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS26412-87-3
Molecular formulaC5H5NO3S
Molecular weight159.16 g/mol
IUPAC namepyridine;sulfur trioxide
SynonymsSVL47N2N3Y · RefChem:1099229 · Pyridine sulfur trioxide · Pyridine sulfotrioxide · Pyridine compound with sulfur trioxide (1:1) · pyridine; sulfonylideneoxidane
Safety & Hazards (GHS) Danger
Corrosive Corrosive Irritant Irritant
  • H302 Harmful if swallowed
  • H314 Causes severe skin burns and eye damage

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma SULFUR TRIOXIDE PYRIDINE COMPLEX 84737-100G
84737-500G		 Request Quote
Sigma SULFUR TRIOXIDE PYRIDINE COMPLEX, 97% S7556-100G
S7556-1KG
S7556-25G		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.