Safety Reference
Danger
H361Suspected of damaging fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
H373May cause damage to organs through prolonged or repeated exposure
Sourcing Levothyroxine sodium?
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Sourcing Levothyroxine sodium?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Levothyroxine sodium is the sodium salt of L-thyroxine, a compound used as a pharmaceutical raw material in replacement therapy. It is primarily supplied for manufacturing oral solid dosage forms and injectable preparations.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
The international HS code for Levothyroxine sodium (CAS 55-03-8) is 2937.90.
2937.90
2937 90 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
sodium (2S)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoate
YDTFRJLNMPSCFM-YDALLXLXSA-M
C1=C(C=C(C(=C1I)OC2=CC(=C(C(=C2)I)O)I)I)C[C@@H](C(=O)[O-])N.[Na+]