Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
H315Causes skin irritation
H319Causes serious eye irritation
Sourcing 3-Thiophenecarboxylic acid, tetrahydro-4-oxo-, methyl ester?
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4-Hydroxyphenylboronic acid pinacol ester
pharmaceutical intermediate
Pyrazole-4-boronic acid pinacol ester
pharmaceutical intermediate
Sourcing 3-Thiophenecarboxylic acid, tetrahydro-4-oxo-, methyl ester?
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This compound is a sulfur-containing heterocyclic ester compound used as a pharmaceutical intermediate in chemical synthesis and manufacturing.
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 3-Thiophenecarboxylic acid, tetrahydro-4-oxo-, methyl ester (CAS 2689-68-1) 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.
methyl 4-oxothiolane-3-carboxylate
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