p-638 meaning in English

《英文MSH词典》P-638
[入口词] P-638
[主题词] Puromycin
[药动学] Trypanocidal Agents
[英文释义] A cinnamamido ADENOSINE found in STREPTOMYCES alboniger. It inhibits protein synthesis by binding to RNA. It is an antineoplastic and antitrypanosomal agent and is used in research as an inhibitor of protein synthesis.