五月天丁香综合久久国产-人妻少妇美乳在线视频-污国产视频观看-亚州AV无码′

● J acid
● CAS No. 87-02-5
● Physical: Dry powder
● Molecular: C10H9 NO4S
● Industry use: Dyes and Intermediates
● IUPAC Name: 7-amino-4-hydroxynaphthalene-2-sulfonic acid