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84737

Sigma-Aldrich

Sulfur trioxide pyridine complex

technical, ≥45% SO3 basis

Synonym(s):

NSC 75831, Pyridine sulfur trioxide complex

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About This Item

Empirical Formula (Hill Notation):
C5H5NO3S
CAS Number:
26412-87-3
Molecular Weight:
159.16
Beilstein:
3704116
EC Number:
247-683-3
MDL number:
MFCD00012437
UNSPSC Code:
12352303
PubChem Substance ID:
57653020
NACRES:
NA.22

grade

technical

form

powder

reaction suitability

reagent type: oxidant

concentration

≥45% (SO3)

ign. residue

≤0.05%

mp

154-170 °C

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

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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 complex is mainly a sulfation agent that can be used for sulfations of alcohols, sulfonations, deoxygenations and other reductions, oxidations with DMSO.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302,H314

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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In vitro and in vivo selectin-blocking activities of sulfated lipids and sulfated sialyl compounds.
Mulligan MS, et al.
International Immunology, 10(5), 569-575 (1998)
Studies on Selectin Blocker. 1. Structure- Activity Relationships of Sialyl Lewis X Analogs.
Ohmoto H, et al.
Journal of Medicinal Chemistry, 39(6), 1339-1343 (1996)
G.A. Olah et al.
Synthesis, 59-59 (1979)
Synthesis, 984-984 (1979)
Y. Hamada et al.
Chemical & Pharmaceutical Bulletin, 30, 1921-1921 (1982)
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