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Levothyroxine Sodium Pentahydrate

L-Thyroxine Sodium Salt Pentahydrate; Sodium (S)-2-Amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propionate Pentahydrate

Purity / Analysis Method >99.0%(T)
Molecular Formula / Molecular Weight C15H10I4NNaO4·5H2O = 888.94
CAS RN 6106-07-6
Unit Price
100 mg 4600
500 mg 7500
1 g 9300
Appearance White to Yellow to Orange powder to crystal
Purity(HPLC) min. 97.0 area%
Purity(Nonaqueous Titration) min. 99.0 %(calcd.on anh.substance)
Specific rotation [a]20/D -6.5 to -4.5 deg(C=3, EtOH:1mol/L NaOH=2:1)
Water 8.0 to 12.0 %
Note

• Pharmaceutical Ingredients (for Research and Experimental Use) is provided as delivered and specified by the issuing Pharmacopoeia.
• The contents of the specifications are subject to change without advance notice. The specification values displayed here are the most up to date values. There may be cases where the product labels display different specification; however, the product quality still meets the latest specification.