Skip to Content
Merck
All Photos(4)

Documents

S7556

Sigma-Aldrich

Sulfur trioxide pyridine complex

97%

Synonym(s):

NSC 75831, Pyridine sulfur trioxide complex

Sign Into View Organizational & Contract Pricing
All Photos(4)

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:
24899756
NACRES:
NA.22

Assay

97%

reaction suitability

reagent type: oxidant

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

Looking for similar products? Visit Product Comparison Guide

Related Categories

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.

related product

Product No.
Description
Pricing

911992

TBSAB, ≥95%

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Polysaccharide-based superporous hydrogels with fast swelling and superabsorbent properties.
Kuang J, et al.
Carbohydrate Polymers, 83(1), 284-290 (2011)
A method for deoxygenation of allylic and benzylic alcohols.
Corey E J and Achiwa K
The Journal of Organic Chemistry, 34(11), 3667-3668 (1969)
Preparation of sulfated-chitins under homogeneous conditions.
Zou Y and Khor E
Carbohydrate Polymers, 77(3), 516-525 (2009)
Sulfated hyaluronan derivatives reduce the proliferation rate of primary rat calvarial osteoblasts.
Kunze R, et al.
Glycoconjugate Journal, 27(1), 151-158 (2010)
Christopher C Waller et al.
Steroids, 92, 74-80 (2014-10-07)
Steroid sulfates are a major class of steroid metabolite that are of growing importance in fields such as anti-doping analysis, the detection of residues in agricultural produce or medicine. Despite this, many steroid sulfate reference materials may have limited or

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service