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Organo-sulphur compounds (1) Dithiocarbonates (xanthates) (2) Thiocarbamates and dithiocarbonates (3) Thiuram mono-, di-or tetrasulphides (4) Methionine (5) Thiourea (sulphourea) (6) Calcium salts of methionine (7) Thio sulphonic acid (8) L-cystine (alpha-amino beta-thio-prophionic acid) – sulphur containing amino acid (9) Sulphonic acid (10) Sulphoxide (11) Mercaptan (12) Allyl isothiocyanate Deleted