thioester

(redirected from Thioesters)

thi·o·es·ter

(thī'ō-es'tĕr),
In enzymology, an ester where the oxygen bridging the substrate or product carbonyl carbon and the enzyme is replaced by a sulfur (usually through a Cys residue); a high-energy intermediate in many enzymes.
Synonym(s): acylmercaptan

thioester

/thio·es·ter/ (-es´ter) a carboxylic acid and a thiol group in ester linkage, e.g., acetyl coenzyme A.

thioester

[thī′ō·es′tər]
an important group of biological chemicals formed by the hydrosulfides (or mercaptans or thiols) and carboxylic acids and identified by a bond between the acyl carbonyl carbon and the thiol sulfur. Examples include the coenzyme A thioesters.
References in periodicals archive ?
phenolics or amines, are used often in combination with secondary (synergistic) antioxidants such as phosphites or thioesters to achieve maximum performance.
Auxiliary antioxidants are phosphites and thioesters.
Chemtura offers the Anox[TM] line of stabilizers, which includes Anox BB, binary blends of hindered phenols and phosphite antioxidants, and Anox TB, ternary blends of primary antioxidants, secondary antioxidants, and thioesters.
They now make Crompton the sole manufacturer of all four families of antioxidants--phenolics, thioesters, phosphites, and amines.
Thioesters are important intermediates in the metabolism of modern organisms.
This class of antioxidants consists of various trivalent phosphorus and divalent sulfur containing compounds, most notable of which are organo phosphites and thioesters.
Odaniell says Crompton is the only supplier of all four major antioxidant groups: phenolics, secondary diaryl amines, phosphates, and thioesters.
Thioesters are important intermediates in the metabolism of modern organisms, and might have played important roles in the origin and early evolution of life.
Seenox 412S is a low-volatility, high-molecular weight, organic sulfur-containing antioxidant that, when used in conjunction with a primary hindered phenolic antioxidant, reportedly exhibits properties that are not obtainable with conventional thioesters.
The Polymer Additives Group is a manufacturer of organic peroxides used as initiators and vulcanizing agents, flame retardants compatible with SBR latices for applications such as carpet backing, chlorinated paraffin plasticizers for rubber processing, and antioxidants and thioesters for thermoplastic rubbers.
Ultranox 626 and Weston 619 solid phosphites used as secondary antioxidants and stabilizers provide processing and color stability, but also act as synergists when combined with uv absorbers, thioesters, and phenolic stabilizers.
The Argus Division is a manufacturer of organic peroxides used as initiators and vulcanizing agents, flame retardants compatible with SBR latices for applications such as carpet backing, chlorinated paraffin plasticizers for rubber processing, and antioxidants and thioesters for thermoplastic rubbers.