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S7556

Sigma-Aldrich

Sulfur trioxide pyridine complex

97%

Synonym(s):

NSC 75831, Pyridine sulfur trioxide complex

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$43.80
100 G
$114.00
1 KG
$634.00

$43.80

Available to ship onApril 04, 2025Details

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25 G
$43.80
100 G
$114.00
1 KG
$634.00

About This Item

Empirical Formula (Hill Notation):
C5H5NO3S
CAS Number:
26412-87-3
Molecular Weight:
159.16
Beilstein/REAXYS Number:
3704116
EC Number:
247-683-3
MDL number:
MFCD00012437
UNSPSC Code:
12352303
PubChem Substance ID:
24899756
NACRES:
NA.22

$43.80

Available to ship onApril 04, 2025Details

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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

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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 (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.[1]
As a sulfating agent, SO3-py complex can be used for the preparation of sulfated-chitins[2], sulfated hyaluronan (HyaS) derivatives[3] and sulfated starch.[4]

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Product No.
Description
Pricing

911992

TBSAB, ≥95%

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

hcodes

H302,H314

Hazard Classifications

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

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 3

ppe

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

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Certificates of Analysis (COA)

Lot/Batch Number
STBL3197
STBK8206
STBK8204
STBK3975
STBK3718

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Preparation of sulfated-chitins under homogeneous conditions.
Zou Y and Khor E
Carbohydrate Polymers, 77(3), 516-525 (2009)
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)
Sulfated hyaluronan derivatives reduce the proliferation rate of primary rat calvarial osteoblasts.
Kunze R, et al.
Glycoconjugate Journal, 27(1), 151-158 (2010)
Helyn Priscila de Oliveira Barddal et al.
International journal of biological macromolecules, 145, 604-610 (2019-12-31)
Heparin is an extremely important and recognized anticoagulant and antithrombotic agent. Obtained from animal sources and being highly potent, risks of contamination by pathogens and bleeding are some concerns related to heparin use. In the search for alternatives to heparin
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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