英文名称：L-Thyroxine sodium salt pentahydrate；L-Thyroxine sodiumsalt；3,3′,5,5′-Tetraiodo-L-thyronine sodium salt pentahydrate；Sodium levothyroxine；Levothyroxine sodium；Eltroxin；Thyroxevan 
其他名称：(2S)-2-氨基-3-[4-(4-羟基-3,5-二碘-苯氧基)-3,5-二碘苯基]丙酸钠；L-甲状腺胺钠；3,5,3′,5′-四碘甲状腺-L-原氨酸钠；左旋甲状腺素钠；L-腻，3'，5'-四碘甲状腺氨酸钠；3',3,5',5-四碘甲腺原氨酸钠盐五水合物；O-(4-羟基-3,5-二碘苯基)-3,5-二碘-L-酪氨酸单钠盐五水合物
CAS号：6106-07-6
C15H10I4NNaO4•5H2O=888.93
级别：BR
含量：97.0～102.0% 
干燥失重：≤11.0%
熔点：207～210℃
形状：白色或浅乳黄色三斜结晶或粉末。无臭无味。微吸湿。在干燥空气及室温时稳定。对光敏感。25℃时水中溶解度约15mg/100ml，溶于矿酸和氢氧化碱、碳酸碱溶液，乙醇中溶解度稍大，极微溶于氯仿和乙mi。饱和溶液的pH为8.35～9.35。相对密度 (d204)2.381
用途：本品仅供科研，不得用于其它用途。
保存：2～8℃，避光
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