5-(4-oxo-2-phenyl-4H-chromen-3-yl)-1,3,7,9-tetraphenyl-5,9-dihydro-1H-pyrano[2,3-d;6,5-d']dipyrimidine-2,4,6,8-tetraone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 37042-16-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,0,4 and 2 respectively; the second part has 2 digits, 1 and 6 respectively. Calculate Digit Verification of CAS Registry Number 37042-16: (7*3)+(6*7)+(5*0)+(4*4)+(3*2)+(2*1)+(1*6)=93 93 % 10 = 3 So 37042-16-3 is a valid CAS Registry Number.