中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-(2,4-二硝基苯基)硫烷基乙酸 | 2-(2,4-dinitrophenylthio)acetic acid | 32403-69-3 | C8H6N2O6S | 258.211 |
—— | 2,4-dinitrophenylthioglycolic acid N-hydroxy succinimide ester | 93801-70-8 | C12H9N3O8S | 355.285 |
Selective N-acylation of aminoglycoside antibiotics with the N-hydroxysuccinimide ester of methyldithioacetic acid, followed by reaction with methanethiol or dithioerythritol, gives sulfhydryl labeled antibiotics. Alternatively, the nucleophilic sulfhydryl group is incorporated into an antibiotic by treatment with N-acetyl-d,l-homocysteine thiolactone. These derivatives couple readily with proteins that have previously been modified with bromoacetylglycyl groups to provide conjugates for use in the development of homogeneous enzyme immunoassays.