for the following products
N-alpha-Benzyloxycarbonyl-o-tert-butyl-L-tyrosine dicyclohexylamine | Z-L-Tyr(tBu)-OH.DCHA | Z-O-tert-butyl-L-tyrosine dicyclohexylamine salt | Z-Tyr(tBu)-OH.DCHA and Z-Tyr(But)-OH.DCHA
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