We are manufacture of pharmaceutical intermediates, flavors and high polymers since 1993, with excellent quality and reputation. Tris(3,6-dioxaheptyl)amine 70384-51-9 Ethylmethyl-carbamic chloride 42252-34-6 2,6-Dihydroxyacetophenone 699-83-2 3,4-Dihydroxybenzaldehyde 139-85-5 N-Methylethylamine hydrochloride 624-60-2 thiosalicylic acid 147-93-3 4-Nitrophenyl chloroformate 7693-46-1