| http://www.w3.org/ns/prov#value | - Representative carboxy protecting groups are C1-C8 loweralkyl (e.g., methyl, ethyl or t-butyl and the like); arylalkyl such as phenethyl or benzyl and substituted derivatives thereof such as alkoxybenzyl or nitrobenzyl groups and the like; arylalkenyl such as phenylethenyl and the like; aryl and substituted derivatives there of such as 5-indanyl and the like; dialkylaminoalkyl such as dimethylamin
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