2-Methyl-3-(2-phenethyl)thiazolinium-tosylat, also known as MTT, is a chemical compound commonly used in biological assays to measure the metabolic activity of cells, particularly in cell viability and proliferation studies. It is a yellow, water-soluble tetrazolium salt that, upon reduction by active mitochondria in living cells, forms a purple formazan product. The intensity of the purple color, which can be quantified using a spectrophotometer, is directly proportional to the number of living cells in the sample, making it a valuable tool for assessing cell health and growth. MTT is widely used in various fields, including drug discovery, toxicology, and biomedical research, to evaluate the effects of different treatments or conditions on cell populations.
The CAS Registry Mumber 6992-22-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,9 and 2 respectively; the second part has 2 digits, 2 and 2 respectively. Calculate Digit Verification of CAS Registry Number 6992-22: (6*6)+(5*9)+(4*9)+(3*2)+(2*2)+(1*2)=129 129 % 10 = 9 So 6992-22-9 is a valid CAS Registry Number.