CAS 645-78-3: Pyrophos
Description:The chemical substance known as "Pyrophos," with the CAS number 645-78-3, is more commonly referred to as pyrophosphate. It is an inorganic compound characterized by its polyatomic ion, which consists of four oxygen atoms bonded to a phosphorus atom, resulting in a tetrahedral structure. Pyrophosphate is often encountered in the form of salts, such as sodium or potassium pyrophosphate, and is known for its role as a buffering agent and emulsifier in various applications, including food processing and biochemical research. It is soluble in water and can participate in various biochemical reactions, particularly in energy transfer processes, as it is involved in the synthesis and hydrolysis of ATP (adenosine triphosphate). Pyrophosphate can also act as a chelating agent, binding metal ions and influencing their reactivity. While generally considered safe in low concentrations, it is important to handle it with care, as with any chemical substance, to avoid potential hazards associated with its use.
Formula:C8H20O6P2S
InChI:InChI=1S/C8H20O6P2S/c1-5-10-15(9,11-6-2)14-16(17,12-7-3)13-8-4/h5-8H2,1-4H3
InChI key:InChIKey=QPXWUAQRJLSJRT-UHFFFAOYSA-N
SMILES:O=P(OCC)(OCC)OP(=S)(OCC)OCC
- Synonyms:
- Ethyl thiopyrophosphate
- Ethyl thiopyrophosphate ((EtO)<sub>2</sub>OPOPS(OEt)<sub>2</sub>)
- Fosarbin
- MonothionoTEPP
- O,O,O,O-Tetraethyl monothiodiphosphate
- O,O,O,O-Tetraethyl thiopyrophosphate
- Phosarbin
- Pirofos
- Pyrophos
- Tetraethyl monothionopyrophosphate
- See more synonyms
- Tetraethyl monothiopyrophosphate
- Tetraethyl thionopyrophosphate
- Thiodiphosphoric acid ((HO)<sub>2</sub>(O)POP(S)(OH)<sub>2</sub>), O<sup>P</sup>,O<sup>P</sup>,O<sup>P′</sup>,O<sup>P′</sup>-tetraethyl ester
- Thiodiphosphoric acid ((HO)<sub>2</sub>P(O)OP(S)(OH)<sub>2</sub>), tetraethyl ester
- Thiopyrophosphoric acid ((HO)<sub>2</sub>(O)POP(S)(OH)<sub>2</sub>), tetraethyl ester
- thiodiphosphoric acid, O,O,O,O-tetraethyl ester
- Thiodiphosphoric acid ((HO)2(O)POP(S)(OH)2), OP,OP,OP′,OP′-tetraethyl ester
- Thiopyrophosphoric acid ((HO)2(O)POP(S)(OH)2), tetraethyl ester
- Thiodiphosphoric acid ((HO)2P(O)OP(S)(OH)2), tetraethyl ester
- O,O,O,O-Tetraethyl thiodiphosphate
Brand | Product data | Purity | Price range | Estimated delivery |
---|---|---|---|---|
![]() | Tetraethyl Thionopyrophosphate REF: 4Z-P-252002CAS: 645-78-3 | - - - | To inquire | Fri 03 Oct 25 |
![]() | O,S-TEPP REF: 04-C17240100CAS: 645-78-3 | - - - | 235.00 € | Tue 07 Oct 25 |
![]() | O,S-TEPP 100 µg/mL in Acetonitrile REF: 04-A17240100AL-100CAS: 645-78-3 | - - - | To inquire | Tue 07 Oct 25 |

Ref: 4Z-P-252002
5mg | To inquire | ||
10mg | To inquire | ||
25mg | To inquire | ||
50mg | To inquire | ||
100mg | To inquire |

Ref: 04-C17240100
100mg | 235.00 € |

O,S-TEPP 100 µg/mL in Acetonitrile
Ref: 04-A17240100AL-100
1ml | To inquire |