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S7556 Sigma-Aldrich

Sulfur trioxide pyridine complex

97%

Synonym: NSC 75831, Pyridine sulfur trioxide complex

  • CAS Number 26412-87-3

  • Empirical Formula (Hill Notation) C5H5NO3S

  • Molecular Weight 159.16

  •  Beilstein Registry Number 3704116

  •  EC Number 247-683-3

  •  MDL number MFCD00012437

  •  PubChem Substance ID 24899756

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Properties

Related Categories Chemical Reagents, Chemical Synthesis, Development Quantities for Research, Oxidizing Agents, Sulfur-Based,
InChI Key   UDYFLDICVHJSOY-UHFFFAOYSA-N
assay   97%

Description

Packaging

1 kg in glass bottle

25, 100 g in glass bottle

Application

• Sulfation agent

Reactant for:
• Preparation of azido anologs of pregnanolone
• Sulfate esters of morphine derivatives
• Gold nanoparticles capped with sulfate-ended ligands as anti-HIV agents

Sulfur trioxide-pyridine (SO3-py) complex can be used to convert the allylic or benzylic hydroxyl group of compounds such as geraniol, farnesol, and 1-indanol into sulfate monoester, which is a good leaving group. This method is highly useful in the total synthesis of sesquiterpenes.
As a sulfating agent, SO3-py complex can be used for the preparation of sulfated-chitins, sulfated hyaluronan (HyaS) derivatives and sulfated starch.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 3261 8 / PGII
WGK Germany 
3

Documents

Certificate of Analysis

Certificate of Origin


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Protocols & Articles
Peer-Reviewed Papers
15

References

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