Levothyroxine sodium;L-Thyroxine Sodium (Steroids)

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

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

Maleic Acid:0.05% max

Heavy metals(as Pb):10 ppm max

Arsenic(As) :4 ppm max

MF:C15H11I4NNaO4

MW:799.8592

MS:
 

Appearance: White crystals ,crystalline powder

Packing: foil bag
 

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