Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
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pharmaceutical intermediate
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This compound is a pharmaceutical intermediate with a heterocyclic ring system containing sulfur and nitrogen. It is used in the manufacturing of active pharmaceutical ingredients.
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 6-Methyl-4-oxo-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide (CAS 120279-88-1) is 2935.90.
2935.90
2935 90 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
6-methyl-4-oxo-5,6-dihydrothieno[2,3-b]thiopyran-2-sulfonamide
QMNAQPMXDMLOLD-UHFFFAOYSA-N
CC1CC(=O)C2=C(S1)SC(=C2)S(=O)(=O)N
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