Name：3,4,5-Trimethoxy benzoic acid Structural formula: 3,4,5-Trimethoxy benzoic acid Molecular formula & Molecular weight: C10H12O5; 212.2 Appearance: white or off-white crystalline powder Quality index: Assay: ≥99 %,Melting point: 170—172 ℃,Loss on dry : ≤0.5%,Residue on ignition: ≤0.2% Uses: Pharmaceutical intermediate, mainly used in pharmaceutical synthesis Storage: sealed container Packing: plastic bag lined cardboard round drum, Net wt 25kg. CAS:118-41-2 Guangzhou Topwork Chemical Co., Ltd, is the biggest leading enterprise in China,we specialize in the depth processing of Chinese gallnuts. Our Chinese gallnut raw materials are widely used in medical, chemical, food, printing & dyeing, astronavigation and national defense and micro-electronics areas, Also the final goods usually exported to the US,Japan, EU and the Southeast Asia etc. We have gained certificates of ISO9001-2000, HACCP, HALAL, FAMI-QS and KOSHER and carried out the pre-registration of REACH. It also got the Chinese production lisences of Food Additives and Feed Additives. Our strong products are:Tannic Acid(Pharmaceutical/Tech/Dyes/Food Grade),Gallic acid（3,4,5-Trihydroxybenzoic acid),Pyrogallol(1,2,3-Benzenetriol),Ethyl gallate, Progyl Gallate, n-Octyl gallate,3,4,5-Trimethoxybenzaldehyde,Methyl 3,4,5-trimethoxybenzoate and so on.