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Merck
CN

84737

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:
Molecular Weight:
159.16
UNSPSC Code:
12352303
NACRES:
NA.22
PubChem Substance ID:
EC Number:
247-683-3
Beilstein/REAXYS Number:
3704116
MDL number:
Form:
powder
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Quality Segment

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

Application

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.
  • 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


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pictograms

CorrosionExclamation mark

signalword

Danger

hcodes

Hazard Classifications

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

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 3

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges



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