|
Heading 2935 : Sulphonamides.
Sulphonamides have the general formula (R1.SO2.N.R2.R3) where R1 is an organic radical of varying complexity having a carbon atom directly attached to the SO2 group and R2 and R3 are either : hydrogen, another atom or an inorganic or organic radical of varying complexity (including double bonds or rings). Many are used in medicine as powerful bactericides. They include, inter alia :(1) o-Toluenesulphonamide. (2) o-Sulphamoylbenzoic acid. (3) p-Sulphamoylbenzylamine. (4) p-Aminobenzenesulphonamide (NH2.C6H4.SO2.NH2) (sulphanilamide). (5) p-Aminobenzenesulphonacetamide. (6) Sildenafil citrate. (7) Sulphapyridine (INN) or p-aminobenzenesulphonamidopyridine. (8) Sulphadiazine (INN) or p-aminobenzenesulphonamidopyrimidine. (9) Sulphamerazine (INN) or p-aminobenzenesulphonamidomethylpyrimidine. (10) Sulphathiourea (INN) or p-aminobenzenesulphonamidothiourea. (11) Sulphathiazole (INN) or p-aminobenzenesulphonamidothiazole. (12) Chlorinated sulphonamides whether or not the chlorine atom is directly linked to nitrogen (e.g., sulphonchloramides or N-chlorosulphonamides, known as chloramines ; chlorothiazide or 6-chloro-7-sulphamoylbenzo-1,2,4-thiadiazine 1,1-dioxide; 6-chloro-3,4-dihydro-7-sulphamoylbenzo-1,2,4-thiadiazine 1,1-dioxide).
This heading excludes compounds in which all of the S-N bonds of the sulphonamide group(s) are part of a ring. They are other heterocyclic compounds (sultams) of heading 29.34.
|
clhs@clhs.co.kr 
070-4214-8300