H-Hyp-OEt·HCl is an ethyl ester hydrochloride derivative of trans-4-hydroxyproline (Hyp), featuring the cyclic pyrrolidine backbone of hydroxyproline with a hydroxyl-bearing side chain and an esterified carboxyl group. The molecule contains a free amino group on the alpha position, a side-chain hydroxyl functionality capable of hydrogen bonding and derivatization, and a carboxyl group masked as the OEt ester, while the "·HCl" denotes formation of a hydrochloride salt that protonates the amine for improved handling and defined ionic character. As an amino acid ester salt, it is used as a protected carboxyl equivalent and substrate in peptide synthesis workflows and in solution or solid-phase preparation of hydroxyproline-containing peptide and amino acid derivatives, including labeled or structurally modified analogues where controlled functional-group presentation is required.
CAT No: CP01116
CAS No:33996-30-4
Synonyms/Alias:Trans-4-Hydroxy-L-proline ethyl ester hydrochloride;
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