T4 Levothyroxine Sodium (L-Thyroxine Sodium)

Aliases: L-Thyroxine sodium salt; Sodium 4-o-(4-hydroxy-3, 5-diiodophenyl)-3, 5-diiodo-l-tyrosine; Sodium (2S)-2-amino-3-[4-(4-hydroxy-3, 5-diiodophenoxy)-3, 5-diiodophenyl]propanoate hydrate (1: 1: 5); Sodium 2-amino-3-[4-(4-hydroxy-3, 5-diiodophenoxy)-3, 5-diiodophenyl]propanoate; Tyrosine, O-(4-hydroxy-3, 5-diiodophenyl)-3, 5-diiodo-, sodium salt (1: 1)
CAS: 55-03-8
EINECS: 200-221-4
Appearance: Almost whtie powder
MF: C15H11I4NNaO4
MW: 799.8592



Items Specifications
Appearance: White crystals ,crystalline powder
Assay: 99.0 – 100.5%
Specific Rotation: -0.10 o — +0.10 o
Residue on ignition: 0.10% max
Water-insoluble substance: 0.1% max
Fumaric Acid: 1.0% max
Maleic Acid: 0.05% max
Heavy metals(as Pb): 10 ppm max
Arsenic(As) : 4 ppm max

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