酸性棕349

folic acid

CITRIC ACID Monohydrate BP 93

Ibandronic acid

pentadecene dicarboxylic acid

parahydroxyphenyl-propionic acid

PA610；PA from Hexamethylene diamine and Sebacic acid(DIN,ISO)

trichloroacetic acid, piperazinium salt; piperazinium trichloroacetate

acid base titration