Supplier Page from Aladdin Scientific Corporation for Phthalein purple
2-oxa-5,8-diazaspiro[3.5]nonane dihydrochloride from Aladdin Scientific Corporation
4-Bromo-3-nitro-1H-pyrazole-5-carboxylic acid from Aladdin Scientific Corporation
Fluorescein PEG NHS, FITC-PEG-NHS from Aladdin Scientific Corporation
Glyphosine from Aladdin Scientific Corporation