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Pyridine sulfur trioxide

Product Name
Pyridine sulfur trioxide
CAS No.
26412-87-3
Chemical Name
Pyridine sulfur trioxide
Synonyms
SULFUR TRIOXIDE PYRIDINE COMPLEX;sulfur trioxide pyridine;PYRIDINE SULFUR TRIOXIDE COMPLEX;NSC 75831;PyridineSO3;fur trioxide;Pyridine suL;Sulfur trioxide pyri;sulfonylideneoxidane;Pyridine sulfur trio
CBNumber
CB9284694
Molecular Formula
C5H5NO3S
Formula Weight
159.16
MOL File
26412-87-3.mol
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Pyridine sulfur trioxide Property

Melting point:
~160 °C
storage temp. 
Store below +30°C.
solubility 
Soluble in polar organic solvents.
form 
Powder
color 
White to beige
Water Solubility 
reacts
Sensitive 
Moisture Sensitive
BRN 
3704116
InChI
InChI=1S/C5H5N.O3S/c1-2-4-6-5-3-1;1-4(2)3/h1-5H;
InChIKey
UDYFLDICVHJSOY-UHFFFAOYSA-N
SMILES
C1=CC=NC=C1.S(=O)(=O)=O
CAS DataBase Reference
26412-87-3(CAS DataBase Reference)
EPA Substance Registry System
Pyridine sulfur trioxide (26412-87-3)
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Safety

Hazard Codes 
C
Risk Statements 
22-34
Safety Statements 
26-36/37/39-45
RIDADR 
UN 3261 8/PG 2
WGK Germany 
3
F 
3-10-21
Autoignition Temperature
>350 °C
TSCA 
Yes
HazardClass 
8
PackingGroup 
II
HS Code 
29420000
Toxicity
LD50 orally in Rabbit: 500 - 2000 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
84737
Product name
Sulfur trioxide pyridine complex
Purity
technical, ≥45% SO
Packaging
100g
Price
$91.6
Updated
2024/03/01
Sigma-Aldrich
Product number
8.18112
Product name
Sulfur trioxide pyridine complex
Purity
for synthesis
Packaging
100g
Price
$77.8
Updated
2024/03/01
Sigma-Aldrich
Product number
84737
Product name
Sulfur trioxide pyridine complex
Purity
technical, ≥45% SO
Packaging
10g
Price
$21.5
Updated
2022/05/15
TCI Chemical
Product number
P0998
Product name
Pyridine - Sulfur Trioxide Complex
Purity
>95.0%(T)
Packaging
25g
Price
$73
Updated
2024/03/01
TCI Chemical
Product number
P0998
Product name
Pyridine - Sulfur Trioxide Complex
Purity
>95.0%(T)
Packaging
100g
Price
$163
Updated
2024/03/01
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Pyridine sulfur trioxide Chemical Properties,Usage,Production

Chemical Properties

white solid

Uses

Sulfur trioxide-pyridine complex is used for sulfations of alcohols, sulfonations, deoxygenations and other reductions, oxidations with dimethyl sulfoxide. It is also used as a source of sulfur trioxide especially in the preparation of sulfate esters. Further, it is used as an activating electrophile in a Parikh-Doering oxidation. In addition to this, it is also used in the preparation and anticoagulation test of sulfated silk fibroin.

Uses

Pyridine-Sulfur Trioxide Complex is used in the sulfation of squid ink polysaccharides (SIPs) as a potential candidate compound for the prevention of tumor metastasis. Pyridine-Sulfur Trioxide Complex is also used in the preparation and anticoagulation test of sulfated silk fibroin.

Uses

Usually used for sulfations of alcohols, sulfonations, deoxygenations and other reductions, oxidations with DMSO.

Purification Methods

Wash the solid with a little CCl4, then H2O to remove traces of pyridine sulfate, and dry it over P2O5. [Baumgarten Chem Ber 59 1166 1926, Olah et al. Synthesis 59 1979, Beilstein 20/5 V 184].

Pyridine sulfur trioxide Preparation Products And Raw materials

Raw materials

Chlorotrimethylsilane Chlorosulfonic acid Ethyl acetate Pyridine Sulfuric acid

Preparation Products

4-METHYLUMBELLIFERYL SULFATE POTASSIUM SALT 3-O-TOLYL-PROPIONALDEHYDE 3-(3-CHLORO-PHENYL)-PROPIONALDEHYDE 3-(4-CHLORO-PHENYL)-PROPIONALDEHYDE ALPHA-KETOBUTYRIC ACID SODIUM SALT 3-(4-NITRO-PHENYL)-PROPIONALDEHYDE 3-(pyridin-3-yl)propanal Dextran Sulfate Sodium Salt
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View Lastest Price from Pyridine sulfur trioxide manufacturers

Hebei Weibang Biotechnology Co., Ltd
Product
Pyridine sulfur trioxide 26412-87-3
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-11-19
Hebei Mojin Biotechnology Co.,Ltd
Product
Pyridine sulfur trioxide 26412-87-3
Price
US $0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
50000KG/month
Release date
2024-09-10
Shaanxi TNJONE Pharmaceutical Co., Ltd
Product
Sulfur Trioxide Pyridine Complex 26412-87-3
Price
US $0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10000kg
Release date
2024-04-15

26412-87-3, Pyridine sulfur trioxideRelated Search:

Diantimony trioxide Sulfur trioxide Pyridine INTERMEDIATES N-(Trimethylsilyl)imidazole 2-Pyridinecarboxaldehyde Pyridine hydrochloride 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one Pyridinium tribromide Pyridine hydrobromide Pyridine-N-oxide Pyridine-4-boronic acid Sulfur 2,4-PENTANEDIONE, SILVER DERIVATIVE SALCOMINE COBALT(II) ACETYLACETONATE Cupric acetylacetonate N-BUTYLISOCYANIDE Sulfur Trioxide Pyridine Complex

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