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ChemicalBook >> CAS DataBase List >> Pyridine sulfur trioxide

Pyridine sulfur trioxide

Pyridine sulfur trioxide price.
  • $7.62 - $22500
  • Product name: Pyridine sulfur trioxide
  • CAS: 26412-87-3
  • MF: C5H5NO3S
  • MW: 159.16
  • EINECS:247-683-3
  • MDL Number:MFCD00078270
  • Synonyms:Pyridine,compd.withsulfurtrioxide(1:1) ;PYRIDINE SULFUR TRIOXIDE COMPLEX ( PSS );Sulfur trioxide-pyridine complex, 98%, active SO3 ca 48-50% w/w;Sulfur trioxide-pyridine complex, tech., 80%;Sulfurtrioxide-pyridinecomplex,98%;Sulfur trioxide pyridine complex, tech. (48.8-50.3% active SO3);Pyridine, compd. with sulfur trioxide;sulfur trioride-pyridine
Price73 Properties Safety Information Description
73 prices
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Brand
  • aablocks
  • AccelPharmtech
  • AK Scientific
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Atlantic Research Chemicals
  • Biosynth
  • Chem-Impex
  • Frontier Specialty Chemicals
  • Labseeker
  • Medical Isotopes, Inc.
  • Sigma-Aldrich
  • SynQuest Laboratories
  • TCI Chemical
  • Thermo Scientific Chemicals
  • TRC
  • Usbiological
Package
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  • 8181120100
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  • 25 g
  • 50gm:
  • 100 g
  • Manufactureraablocks
  • Product numberAA002T0D
  • Product descriptionPyridine sulfur trioxide ≥97%
  • Packaging25g
  • Price$10
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA002T0D
  • Product descriptionPyridine sulfur trioxide 98%
  • Packaging100g
  • Price$13
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA002T0D
  • Product descriptionPyridine sulfur trioxide 98%
  • Packaging500g
  • Price$47
  • Updated2026-05-28
  • Buy
  • ManufacturerAccelPharmtech
  • Product numberAT2266
  • Product descriptionPyridine Sulfur Trioxide 99%
  • Packaging500KG
  • Price$22500
  • Updated2026-05-21
  • Buy
  • ManufacturerAK Scientific
  • Product numberS081
  • Product descriptionSulfur trioxide pyridine complex 98%,activeSO3ca48-50%
  • Packaging100g
  • Price$53
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ92668
  • Product descriptionSulfur trioxide pyridine complex 95%
  • Packaging100g
  • Price$45
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ92668
  • Product descriptionSulfur trioxide pyridine complex 95%
  • Packaging250g
  • Price$94
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ92668
  • Product descriptionSulfur trioxide pyridine complex 95%
  • Packaging5g
  • Price$13
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberS081
  • Product descriptionSulfur trioxide pyridine complex 98%,activeSO3ca48-50%
  • Packaging5g
  • Price$18
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ92668
  • Product descriptionSulfur trioxide pyridine complex 95%
  • Packaging25g
  • Price$20
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberS081
  • Product descriptionSulfur trioxide pyridine complex 98%,activeSO3ca48-50%
  • Packaging25g
  • Price$26
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberS081
  • Product descriptionSulfur trioxide pyridine complex 98%,activeSO3ca48-50%
  • Packaging250g
  • Price$118
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ92668
  • Product descriptionSulfur trioxide pyridine complex 95%
  • Packaging500g
  • Price$167
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberS081
  • Product descriptionSulfur trioxide pyridine complex 98%,activeSO3ca48-50%
  • Packaging500g
  • Price$209
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberS081
  • Product descriptionSulfur trioxide pyridine complex 98%,activeSO3ca48-50%
  • Packaging1kg
  • Price$395
  • Updated2026-06-04
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberING0005050
  • Product descriptionSULFUR TRIOXIDE PYRIDINE COMPLEX 95.00%
  • Packaging100G
  • Price$2483.25
  • Updated2021-12-16
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA002T0D Pyridine sulfur trioxide ≥97% 25g $10 2026-05-28 Buy
aablocks AA002T0D Pyridine sulfur trioxide 98% 100g $13 2026-05-28 Buy
aablocks AA002T0D Pyridine sulfur trioxide 98% 500g $47 2026-05-28 Buy
AccelPharmtech AT2266 Pyridine Sulfur Trioxide 99% 500KG $22500 2026-05-21 Buy
AK Scientific S081 Sulfur trioxide pyridine complex 98%,activeSO3ca48-50% 100g $53 2026-06-04 Buy
AK Scientific J92668 Sulfur trioxide pyridine complex 95% 100g $45 2026-06-04 Buy
AK Scientific J92668 Sulfur trioxide pyridine complex 95% 250g $94 2026-06-04 Buy
AK Scientific J92668 Sulfur trioxide pyridine complex 95% 5g $13 2026-06-04 Buy
AK Scientific S081 Sulfur trioxide pyridine complex 98%,activeSO3ca48-50% 5g $18 2026-06-04 Buy
AK Scientific J92668 Sulfur trioxide pyridine complex 95% 25g $20 2026-06-04 Buy
AK Scientific S081 Sulfur trioxide pyridine complex 98%,activeSO3ca48-50% 25g $26 2026-06-04 Buy
AK Scientific S081 Sulfur trioxide pyridine complex 98%,activeSO3ca48-50% 250g $118 2026-06-04 Buy
AK Scientific J92668 Sulfur trioxide pyridine complex 95% 500g $167 2026-06-04 Buy
AK Scientific S081 Sulfur trioxide pyridine complex 98%,activeSO3ca48-50% 500g $209 2026-06-04 Buy
AK Scientific S081 Sulfur trioxide pyridine complex 98%,activeSO3ca48-50% 1kg $395 2026-06-04 Buy
American Custom Chemicals Corporation ING0005050 SULFUR TRIOXIDE PYRIDINE COMPLEX 95.00% 100G $2483.25 2021-12-16 Buy
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Properties

Melting point :~160 °C
bulk density :600kg/m3
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)

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

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.

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Suppliers and manufacturers

NANJING SHUNXIANG PHARMACEUTICAL TECHNOLOGY CO.,LTD. Shandong Xibang Biological Technology Development Co. LTD Shanghai Worldyang Chemical Co.,Ltd. Shandong Vantage Specialty Chemicals Biotechnology Co., Ltd. XI'AN VEDA CHEMICAL CO.,LTD Tongling LishidaChem Technology Co., Ltd Quzhou Rundong Chemical (Technology) Co. Beijing Anruiqi Chemical Technology Co., Ltd. J & K SCIENTIFIC LTD. Meryer (Shanghai) Chemical Technology Co., Ltd.