Safety Reference
Warning
H302Harmful if swallowed
H319Causes serious eye irritation
Regulatory Compliance1
- California Proposition 65US
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
CAS 111406-87-2
Zyflo is a brand name for zileuton, an oral active pharmaceutical ingredient that inhibits 5-lipoxygenase, thereby blocking the formation of leukotrienes. It is used as a maintenance treatment for asthma.
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 Zyflo (CAS 111406-87-2) is 2934.99.
2934.99
2934 99 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
1-[1-(1-benzothiophen-2-yl)ethyl]-1-hydroxyurea
MWLSOWXNZPKENC-UHFFFAOYSA-N
CC(C1=CC2=CC=CC=C2S1)N(C(=O)N)O