1-Methyl-2-oxo-2,3,4,4a,5,6,7,8,9,10,11-decahydrotetraphen is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 28740-10-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,7,4 and 0 respectively; the second part has 2 digits, 1 and 0 respectively. Calculate Digit Verification of CAS Registry Number 28740-10: (7*2)+(6*8)+(5*7)+(4*4)+(3*0)+(2*1)+(1*0)=115 115 % 10 = 5 So 28740-10-5 is a valid CAS Registry Number.