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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/REAXYS Number 3704116

  •  EC Number 247-683-3

  •  MDL number MFCD00012437

  •  PubChem Substance ID 24899756

  •  NACRES NA.22

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Properties

Related Categories Chemical Reagents, Chemical Synthesis, Development Quantities for Research, Oxidizing Agents, Sulfur-Based,
Quality Level   200
assay   97%
SMILES string   O=S(=O)=O.c1ccncc1
InChI   1S/C5H5N.O3S/c1-2-4-6-5-3-1;1-4(2)3/h1-5H;
InChI key   UDYFLDICVHJSOY-UHFFFAOYSA-N

Description

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.

Packaging

1 kg in glass bottle

25, 100 g in glass bottle

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 3261 8 / PGII
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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911992 TBSAB, ≥95%

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