Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing 5-Amino-1,3,4-thiadiazole-2-thiol?
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1-(2,3-Dichloro-4-hydroxyphenyl)butan-1-one
pharmaceutical intermediate
Sourcing 5-Amino-1,3,4-thiadiazole-2-thiol?
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5-Amino-1,3,4-thiadiazole-2-thiol is a chemical compound used as a reference impurity in the manufacturing and quality control of the pharmaceutical intermediate acetazolamide. It is characterized by a five-membered aromatic ring containing sulfur and nitrogen atoms, along with an amine group, which contributes to its polarity and specific analytical profile.
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 5-Amino-1,3,4-thiadiazole-2-thiol (CAS 2349-67-9) 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.
5-amino-3H-1,3,4-thiadiazole-2-thione
GDGIVSREGUOIJZ-UHFFFAOYSA-N
C1(=NNC(=S)S1)N