Safety Reference
Warning
H302Harmful if swallowed
H351Suspected of causing cancer
H350May cause cancer
H361Suspected of damaging fertility or the unborn child
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 51-52-5
Homatropine hydrobromide
pharmaceutical raw material
Propylthiouracil is a pharmaceutical raw material used in the manufacture of thyroid-inhibiting medications. It is a sulfur-containing heterocyclic compound with moderate lipophilicity and two hydrogen-bond donor sites.
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 Propylthiouracil (CAS 51-52-5) is 2933.59.
2933.59
2933 59 95
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
6-propyl-2-sulfanylidene-1H-pyrimidin-4-one
KNAHARQHSZJURB-UHFFFAOYSA-N
CCCC1=CC(=O)NC(=S)N1