Supplier Page from Aladdin Scientific Corporation for 4-Nitro-2-(trifluoromethyl)aniline
2-oxa-5,8-diazaspiro[3.5]nonane dihydrochloride from Aladdin Scientific Corporation
Fluorescein PEG NHS, FITC-PEG-NHS from Aladdin Scientific Corporation
Potassium chromate from Aladdin Scientific Corporation
Sodium iodide from Aladdin Scientific Corporation