... ,4-Dihydroxy Benzoic Acid Potassium Salt CAS NO:91753-30-9 About us: Xi'an Pandora Biological Technology Co., Ltd. is ... :Rhodiola Rosea Extract 1-5%Rosavin; 1-10%Salidroside NO.9:Milk Thistle Extract USP32 /DAB10 /Water Soluble Silymarin,etc. NO ... you:) 3,4-dihydroxy benzoic acid (CAS NO:91753-30-9)