ChemicalBook >> CAS DataBase List >>Pyridine sulfur trioxide
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
- Molecular Weight:
- 159.16
- MDL Number:
- MFCD00078270
- MOL File:
- 26412-87-3.mol
- MSDS File:
- SDS
Last updated:2025-04-15 15:30:59
| 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) |
| FDA UNII | |
| EPA Substance Registry System |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H315-H319 | |||||||||
| Precautionary statements | P264-P270-P280-P301+P312-P302+P352-P305+P351+P338 | |||||||||
| 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 | |||||||||
| NFPA 704 |
|
Pyridine sulfur trioxide price More Price(30)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 84737 | Sulfur trioxide pyridine complex technical, ≥45% SO | 26412-87-3 | 100g | $91.6 | 2025-03-01 | Buy |
| Sigma-Aldrich | 8.18112 | Sulfur trioxide pyridine complex for synthesis | 26412-87-3 | 100g | $77.8 | 2025-03-01 | Buy |
| Sigma-Aldrich | 84737 | Sulfur trioxide pyridine complex technical, ≥45% SO | 26412-87-3 | 10g | $21.5 | 2023-05-15 | Buy |
| TCI Chemical | P0998 | Pyridine - Sulfur Trioxide Complex >95.0%(T) | 26412-87-3 | 25g | $73 | 2025-03-01 | Buy |
| TCI Chemical | P0998 | Pyridine - Sulfur Trioxide Complex >95.0%(T) | 26412-87-3 | 100g | $163 | 2025-03-01 | Buy |
Pyridine sulfur trioxide Chemical Properties,Uses,Production
Chemical Properties
white solidUses
Usually used for sulfations of alcohols, sulfonations, deoxygenations and other reductions, oxidations with DMSO.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
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.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
Preparation Products
1of2
Global( 520)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Worldyang Chemical Co.,Ltd. | ,+86-21-56795779; +8613651600618 | sales@worldyachem.com | China | 879 | 58 |
| Shandong Believe Chemical PTE.LTD | +86-18553607090 +8618553607090 | 1093908296@qq.com | China | 1684 | 58 |
| Hebei Mojin Biotechnology Co., Ltd | +8613288715578 | sales@hbmojin.com | China | 12453 | 58 |
| Shaanxi TNJONE Pharmaceutical Co., Ltd | +86-13474506593 +86-13474506593 | sarah@tnjone.com | China | 848 | 58 |
| Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 | sales@capotchem.com | China | 29797 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21695 | 55 |
| Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 | jack.li@time-chemicals.com | China | 1807 | 55 |
| Hangzhou FandaChem Co.,Ltd. | 008657128800458; +8615858145714 | fandachem@gmail.com | China | 9350 | 55 |
| Nanjing ChemLin Chemical Industry Co., Ltd. | 025-83697070 | product@chemlin.com.cn | CHINA | 3012 | 60 |
| Shanghai Yingrui Biopharma Co., Ltd. | +86-21-33585366 - 03@ | sales03@shyrchem.com | CHINA | 738 | 60 |
View Lastest Price from Pyridine sulfur trioxide manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-04-23 | Pyridine sulfur trioxide
26412-87-3
|
US $5.00 / KG | 1KG | 99% | 500mt/year | Jinan Finer Chemical Co., Ltd | |
 |
2025-04-15 | Sulfur Trioxide Pyridine Complex
26412-87-3
|
US $0.00 / kg | 1kg | 99% | 10000kg | Shaanxi TNJONE Pharmaceutical Co., Ltd | |
 |
2024-10-30 | Pyridine sulfur trioxide
26412-87-3
|
US $10.00 / kg | 1kg | 99% | 20 tons | Shandong Believe Chemical PTE.LTD |
-
- Pyridine sulfur trioxide
26412-87-3
- US $5.00 / KG
- 99%
- Jinan Finer Chemical Co., Ltd
-
- Sulfur Trioxide Pyridine Complex
26412-87-3
- US $0.00 / kg
- 99%
- Shaanxi TNJONE Pharmaceutical Co., Ltd
-
- Pyridine sulfur trioxide
26412-87-3
- US $10.00 / kg
- 99%
- Shandong Believe Chemical PTE.LTD
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26412-87-3