在线永久免费观看网-波多野结衣亚洲一区二区三区-三级黄色片在线观看-国产成人久久一区二区三区|www.houjige.com

  熱線電話:021-54370211?    

3,4-Dihydroxybenzoic acid

Name 3, 4-dihydroxybenzoic acid

CAS number: 99-50-3

Quality standards: 99%

Package: 25kg/carton

Land: domestic

Details:

Chinese name 3, 4-dihydroxybenzoic acid

The English name is 3, 4-dihydroxybenzoic acid

Chinese aliases of catechin;O-phenyl-4-carboxylic acid;3, 4-dihydroxybenzoic acid

CAS RN 99-50-3

EINECS no. 202-760-0

C7H5O4

The number is 153.1127

Physical and chemical properties The melting point of 198-202 ° C

It is used as a dyestuff and medical intermediates

@ 2016 ShangHaiYaYu Biomedical co.,ltd TEL:021-54370211、54370255、54370355 FAX:021-54370255