2-Mercapto-3-methyl-1 -butanol

Yes. The NOEL of 0.7 mg/kg bw per day for the related substance 2-mercapto-3-butanol (No. 546) (Coxetal., 1974) is >3 million times the estimated daily intake of methyl 3-mercaptobutanoate when used as a flavouring agent. ... 

Fig. 4.2 Hydrolytic activity of cauxin on 3-MBCG and proposed metabolic pathways for the conversion of 3-MBG to felinine in the cat kidney. The 3-MBCG (20 mM) was incubated with or without cauxin (1.5 mg/ml) at 38°C for 6 h, and the reaction mixtures were analyzed by thin layer chromatography with ninhydrin staining. y-GTP, y-glutamyl transferase RDP, renal dipeptidase a, 3-mercapto-3-methylbutyl formate b, 3-mercapto-3-methyl-l-butanol c, 3-methyl-3-methylthio-1-butanol and d, 3-methyl-3-(2-methyldisulfanyl)-l-butanol...

Fig. 4.3 Behavioral bioassay by using a felinine derivative. Felinine purified from cat urine by HPLC was dissolved in water at a concentration of lOmg/ml, and 200 pi of the solution was stored in a 1.5-ml eppendorf tube at room temperature for 5 days. GC-MS analysis detected 3-mercapto-3-methyl-l-butanol in the headspace gas of the tube. The cat (6-year-old castrated male) was able to sniff the opening of the tube, but not contact the felinine solution. The cat sniffed 3-mercapto-3-methyl-l-butanol with considerable interest (18s and 25s) and then licked his lips five times (37 s)...

Thiiranes occur naturally in cruciferous vegetables. Thiirane and 2-methylthiirane have been detected by GC-MS in the aroma of canned beef. Beer with an onion-like off-flavor was found to contain (l-methylethyl)thiirane and 2-mercapto-3-methyl-l-butanol <88Mi 105-01). Thiirane is in the aroma of cooking mutton and is formed in the brewing of foods. 1 -Cyano-4,5-epithiopentane was the major component of rape seeds at 3 days of germination <85ABC217>. 

Q.19) 1-Butanol, 3-mercapto-3-methyl-, 3-methyl-3-sulfanylbutan-l-ol, 3-mercapto-3-methylbutan-l-ol [34300-94-21 FEMA 3854... 

The atmosphere in the tank was made ammoniacal by placing 200 ml n-butanol-2.5% aq. ammonium hydroxide (1 1) in the bottom of the tank. 5-Mercapto-l-methyl-4-nitroimidazole was located at R 0.09 and a purple fluorescence at R 0.50. After elution into water the spectral properties summarised in Table 1 were obtained. These absorbances are characteristic of 3-alkyl-6-mercaptopurine (Elion, 1957). The presence of mercuric ions with the compound in 0.1 N HCl... 

Dihydro-2-methyl-3(2//)-furanone 986.83 787.95 52 3-Mercapto-3-methyl- 1-butanol 11.29 88.5 SL... 

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