1-(5-methyl-4,5-dihydro-thiazol-2-yl)-1,3-diphenyl-thiourea, also known as MTT, is a chemical compound with the molecular formula C14H14N4S2. It is a yellow crystalline solid that is soluble in water and serves as a colorimetric assay for measuring the activity of enzymes, such as proteases and esterases, as well as the viability of cells. MTT is widely used in biological research and drug discovery due to its ability to form a purple formazan product upon reduction by living cells, which can be quantified spectrophotometrically. This property makes it a valuable tool for assessing cell proliferation, cytotoxicity, and other cellular processes.
The CAS Registry Mumber 5744-45-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,4 and 4 respectively; the second part has 2 digits, 4 and 5 respectively. Calculate Digit Verification of CAS Registry Number 5744-45: (6*5)+(5*7)+(4*4)+(3*4)+(2*4)+(1*5)=106 106 % 10 = 6 So 5744-45-6 is a valid CAS Registry Number.