Pyridine Sulfur Trioxide
Cas No :
26412-87-3
Molecular Weight :
159.16 G/Mol
Molecular Formula :
C5H5NO3S
Solubility :
Soluble In Polar Organic Solvents
Description :
Pyridine Sulfur Trioxide is a solid complex formed by the reaction of sulfur trioxide with pyridine. It is a mild and controlled sulfonating agent widely used in organic synthesis for introducing sulfonyl and sulfate groups into organic molecules.
This compound is mainly applied in pharmaceutical intermediates, dye chemistry, agrochemical synthesis, and research laboratories. Pyridine Sulfur Trioxide is a technical and laboratory reagent and is not intended for food, fragrance, or cosmetic use.
Used as a selective sulfonating and sulfating agent in organic synthesis.
Enables controlled introduction of sulfonic acid or sulfate ester groups.
Preferred over free sulfur trioxide due to better handling and selectivity.
Can be interlinked with related products such as Sulfur Trioxide, Pyridine, Chlorosulfonic Acid, Methanesulfonic Acid, and Sulfonating Agents available on ChemicalBull.
Used in the synthesis of API intermediates and agrochemical compounds requiring sulfonation.
Plays a role in improvingthe solubility and bioavailability of drug intermediates.
Applied in multi-step synthesis processes in controlled conditions.
Widely used in academic and industrial research laboratories.
Suitable for reaction development, method optimisation, and functional group modification.
Common reagent in dye and pigment chemistry research.
Handle only in a fume hood
Use gloves, goggles, and protective clothing
Avoid inhalation and moisture exposure
Store in a cool, dry, and well-ventilated place
Keep container tightly closed
Follow MSDS and chemical safety procedures strictly
Manufactured by speciality chemical producers under controlled synthesis to ensure reactivity, purity, and stability.
ChemicalBull Pvt. Ltd. supplies Pyridine Sulfur Trioxide for pharmaceutical, agrochemical, dye, and research applications in domestic and export markets.
The Material Safety Data Sheet (MSDS) is available on request and provides detailed information on hazards, storage, handling, and disposal.