https://www.selleckchem.com/TGF-beta.html
Moreover, two tetrasubstituted benzidine derivatives other than TMB (4OCH 3 and 2OCH 3 2CH 3 ) were synthesized for comparison. It turned out that the performances (sensitivity, color purity, and stability of the colored products) of TMB are still superior, thus chemically confirming its status of "the chosen substrate" in colorimetric assays.We developed a simple and rapid method for analyzing nonproteinogenic amino acids that does not require conventional chromatographic equipment. In this technique, nonproteinogenic amino acids were first co