英文名稱：L-Thyroxine sodium salt pentahydrate；L-Thyroxine sodiumsalt；3,3′,5,5′-Tetraiodo-L-thyronine sodium salt pentahydrate；Sodium levothyroxine；Levothyroxine sodium；Eltroxin；Thyroxevan 
其他名稱：(2S)-2-氨基-3-[4-(4-羥基-3,5-二碘-苯氧基)-3,5-二碘苯基]丙酸鈉；L-甲狀腺胺鈉；3,5,3′,5′-四碘甲狀腺-L-原氨酸鈉；左旋甲狀腺素鈉；L-膩，3'，5'-四碘甲狀腺氨酸鈉；3',3,5',5-四碘甲腺原氨酸鈉鹽五水合物；O-(4-羥基-3,5-二碘苯基)-3,5-二碘-L-酪氨酸單鈉鹽五水合物
CAS號：6106-07-6
C15H10I4NNaO4•5H2O=888.93
級別：BR
含量：97.0～102.0% 
干燥失重：≤11.0%
熔點：207～210℃
形狀：白色或淺乳黃色三斜結(jié)晶或粉末。無臭無味。微吸濕。在干燥空氣及室溫時穩(wěn)定。對光敏感。25℃時水中溶解度約15mg/100ml，溶于礦酸和氫氧化堿、碳酸堿溶液，乙醇中溶解度稍大，極微溶于氯仿和乙mi。飽和溶液的pH為8.35～9.35。相對密度 (d204)2.381
用途：本品僅供科研，不得用于其它用途。
保存：2～8℃，避光
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