Supplier Page from Aladdin Scientific Corporation for (3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-methylbutanamido)-N,3-dimethylbutanamido)-3-methoxy-5-methylheptanoic acid
2-oxa-5,8-diazaspiro[3.5]nonane dihydrochloride from Aladdin Scientific Corporation
4-(1H-Pyrazol-1-ylsulfonyl)phenylboronic acid from Aladdin Scientific Corporation
4-(Dimethylamino)phenyl isocyanate from Aladdin Scientific Corporation
Potassium chromate from Aladdin Scientific Corporation