Truscott, Roger J. W. published the artcileTwo new sulfur-containing amino acids in man, Category: bromides-buliding-blocks, the publication is Biomedical Mass Spectrometry (1981), 8(3), 99-104, database is CAplus and MEDLINE.
Two unusual S-containing amino acids were isolated from the urine of a baby (of 1st cousin parents) who died with major phys. malformations and failure of growth and development. These acids were identified as (S)-(2-carboxypropyl)-cysteamine and -cysteine by mass spectral anal. and by synthesis. A recessively inherited error in valine metabolism at the level of methacrylyl-CoA hydratase, with conjugation of the methacrylic acid so formed with cysteine, is proposed as the origin of the compounds Possibly methacrylic acid or one of its derivatives caused the malformations in the baby.
Biomedical Mass Spectrometry published new progress about 56970-78-6. 56970-78-6 belongs to bromides-buliding-blocks, auxiliary class Bromide,Carboxylic acid,Aliphatic hydrocarbon chain,Inhibitor, name is 3-Bromo-2-methylpropanoic acid, and the molecular formula is C25H23NO4, Category: bromides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary