Tert- Butylhydroquinone

Methyl tert-butylhydroquinone, 20 105 Methyl-tertiary-butyl ether. See Methyl-tert-butyl ether (MTBE) Methyltestosterone, registered for use in aquaculture in Australia, 3 222t Nb-Methyl tetrahydrofolic acid, 25 802 2-Methyltetrahydrofuran (METHF),... 

For many years, in connection with certain food products, a barrier to freeze-drying has been the problems associated with the storage stability of foods that are susceptible to lipid oxidation. In order for such foods to have a reasonable shelf life and acceptable flavor characteristics, protective additives, which retard oxidation, are often added before dehydration. Such antioxidants must carry through the process and not be lost because of volatilization. For these applications, BHA, BHT, and tert-butylhydroquinone (TBI1Q) have been found quite effective. 

A special type of polymeric antioxidant is anoxomer, which consists of 1,4-benzenediol, 2-(l,l-dimethylethyl)-polymer with diethylbenzene, 4-(l,l-dimethyl-ethyl)phenol, 4-methoxy-phenol, 4,4 -(l-methylethylidene)bis(phenol), and 4-methylphenol prepared by condensation polymerization of divinylbenzene (m- and p-) with tert-butylhydroquinone, tert-butylphenol, hy-droxyanisole, p-cresol, and 4,4 -isopropylidenediphenol. Total monomers, dimers, and trimers below 500 are not more than 1%. Anoxomer is permitted in the United States as an antioxidant in food at a level of not more than 5 ppm of fat and oil content of the food. 

T Stijve. Gas chromatographic determination of butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA) and tert-butylhydroquinone (TBHQ) in milk products. Deutsch Lebensm Rund-sch 79 108-111, 1983. 

PJ van Niekerk, LM du Plessis. High-performance liquid chromatographic determination of tert-butylhydroquinone in vegetable oils. J Chromatogr 187 436-438, 1980. 

Di-terf-butylcresol, dl20 2,5-Di-tert-butylhydroquinone, dl 12 Dibutyl ketone, nlOO... 

Ratio = blend ratio soybean oil fatty acid methyl esters (SME) in low-sulfur (<500ppm) No. 2 petrodiesel (LSD) where BO is 0% SME and B20 contains 20 vol% SME BHA = butylated hydroxyanisole BHT = butylated hydroxytoluene TBHQ = tert-butylhydroquinone. 

All meat samples contained 2Z NaCl and 1.5Z sucrose. The additives were sodium ascorbate SA, sodium tripolyphosphate STPP, butylated hydroxyanisole BHA, tert-butylhydroquinone TBHQ, and sodium nitrite, NaN02. 

C14H20O 4 -tert-butyl-2 ,6 -dimethyl acetophenone 2040-10-0 558.15 49.498 2 27700 C14H2202 2,5-di-tert-butylhydroquinone 88-58-4 528.15 46.595 2... 

NCC non-specific cytotoxic cells TBHQ tert-butylhydroquinone... 

Both GCS subunits are regulated at the transcriptional level by oxidative stress [ 14]. Oxidative stress induced by numerous agents - such as hydrogen peroxide, quinones, ionising radiation, TNF-a or 4-hydroxy-2-nonenal -enhances GCS activity as well as the transcription of the heavy GCS subunit [ 14,22,23]. Transcription of the Hght GCS subunit is also increased in response to tert-butylhydroquinone or 4-hydroxy-2-nonenal [14, 22, 24, 25]. Furthermore, 4-hydroxy-2-nonenal stabilises the mRNA of both GCS subunits [24]. 

Yang H, Zeng Y, Lee TD,YangY, Ou X, Chen L, Hague M, Rippe R, Lu SC (2002) Role of AP-1 in the coordinate induction of rat glutamate-cysteine ligase and glutathione synthetase by tert-butylhydroquinone. J Biol Chem 277 35232-9... 

Beilstein Handbook Reference) AI3-61039 Banox 20BA 1,4-Benzenediol (1,1-di-methylethyl)- 1,4-Benzenediol, 2-(1,1-dimethylethyl)- BRN 0637923 tert-Butyl-1,4-benzenediol 2-tert-Butyl-1,4-benzenediol Butylhydroquinone, tert- t-Butyl hydroquinone tert-Butylhydroquinone tertiary-Butylhydroquinone 2-t-Butylhydroquinone 2-tert-Butylhydroquinone 2-tert-Butyl(1,4)hydroquinone CCRIS 1447 2-(1,1-Dimethylethyl)-1,4-benzenediol Eastman MTBHQ EINECS 217-752-2 HSDB 838 Hydroquinone, t-butyl- Hydroquinone, tert-butyl- Mono-tert-butylhydroquinone Mono-tertiary butyl-hydroquinone MTBHQ NSC 4972 Sustane Sustane TBHQ TBHQ Tenox TBHQ. Preservative and antioxidant for foodstuffs and meat products color stable and useful as substitute for reactive antioxidants that tend to form purple complexes with iron or copper. White to light tan crystal solid soluble in organic solvents slightly soluble in water mp = 126.5-128,5 LD50 (rat orl) = 700 mg/kg, AC Ind, Inc Aceto Corp. Allchem Ind. Charkit Eastman Chem. Co. Lancaster Synthesis Co. Penta Mfg. Showa Denko UOP. 

The product and mechanistic studies of oxidation of important pyrocatechols and hydroquinones by oxygen in an alkaline medium189-19S give information on the types of radical intermediates formed. It was found by means of flow ESR methods196 197 that the radical CXXXVII arises in aquenous alkaline medium in the oxidation of 2-tert-butylhydroquinone CXXXVI, which is one of the most efficient hydroquinone antioxidants. As a secondary radical, the dianion radical CXLI was detected in a static arrangement, which is formed via intermediates... 

Lee JM, Moehlenkamp JD, Hanson JM, Johnson JA (2001) Nrf2-dependent activation of the antioxidant responsive element by tert-butylhydroquinone is independent of oxidative stress in IMR-32 human neuroblastoma cells. Biochem Biophys Res Commun 280 286-292... 

Ni, Y., Wang, L., and Kokot, S. (2000). Voltammetric determination of butylated hydroxya-nisole, butylated hydroxytoluene, propyl gallate and tert-butylhydroquinone by use of chemometric approaches. And. Chim. Acta 412,185-193. 

Butyl benzyl phtbalate, 45 4-rert-Butylcatechol, 240 2-Butyl-2-ethyl-l,3-propanediol, 373 tert-Butylhydroquinone, 212, 524 n-Butyllilbium, 17, 18, 162 n-Butyl methacrylate, 309 tert-Butyl oxide, 75 4-tert-Butylphenol, 244... 

---