Supplier Page from Aladdin Scientific Corporation for (4-(Methoxycarbonyl)-3-nitrophenyl)boronic acid
2-oxa-5,8-diazaspiro[3.5]nonane dihydrochloride from Aladdin Scientific Corporation
4-Bromo-1,2-diaminobenzene from Aladdin Scientific Corporation
5-(Aminosulfonyl)-2-methylbenzoic acid from Aladdin Scientific Corporation
Boc-3,4-dimethoxy-l-phenylalanine from Aladdin Scientific Corporation