L-Thyroxine；3,5,3′,5′-Tetraiodo-L-thyronine

CAS No.: 51-48-9

C15H11I4NO4=776.87

Grade: BR

Content: ≥ 98.0%

Melting point: 224 ~ 226 ℃

Heavy metals: ≤ 10ppm

Physicochemical properties: white or slightly grayish brown crystal. Decompose at 235 ~ 236 ℃. Soluble in alkali solution, insoluble in water, ethanol and ether. Specific rotation[ α] 25546-3.2 ° (0.66g dissolved in 6.07g 0.5mol/l sodium hydroxide + 13.03g ethanol)[ α] 20d-4.4 ° (c=3, 0.13mol/l sodium hydroxide in 70% ethanol).

Purpose: biochemical research. L-thyroxine stimulates metabolism and regulates growth and development by affecting DNA transcription and protein synthesis

Storage: 2 ~ 8 ℃, away from light