(4R,5R)-4,5,7,8,9,10,11,12-Octahydro-benzo[def]chrysene-4,5-diol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 78031-13-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,0,3 and 1 respectively; the second part has 2 digits, 1 and 3 respectively. Calculate Digit Verification of CAS Registry Number 78031-13: (7*7)+(6*8)+(5*0)+(4*3)+(3*1)+(2*1)+(1*3)=117 117 % 10 = 7 So 78031-13-7 is a valid CAS Registry Number.