基本信息:中文名称 4-氧代四氢-2H-硫代吡喃-3-羧酸乙酯 1,1-二氧化物英文名称 Ethyl 4-oxotetrahydro-2H-thiopyran-3-carboxylate 1,1-dioxide英文别名 ethyl 1,1,4-trioxothiane-3-carboxylate;CAS号 889946-17-2日本海关编码(HS-code):293499090概述(Summary):293499090. Other heterocyclic compounds. General tariff:0.046. WTO tariff:0.031. GSP tariff:Free.