Safety Reference
Danger
H315Causes skin irritation
H319Causes serious eye irritation
H351Suspected of causing cancer
H360
Sourcing Letrozole?
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Sourcing Letrozole?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Letrozole is an active pharmaceutical ingredient used in the manufacturing of medications for postmenopausal breast cancer. It functions as an aromatase inhibitor, a class of compounds that play a role in endocrine therapy.
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 Letrozole (CAS 112809-51-5) is 2933.99.
2933.99
2933 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-[(4-cyanophenyl)-(1,2,4-triazol-1-yl)methyl]benzonitrile
HPJKCIUCZWXJDR-UHFFFAOYSA-N
C1=CC(=CC=C1C#N)C(C2=CC=C(C=C2)C#N)N3C=NC=N3