(3aβ,3bα,6aα)-3,3a,3b,5,6,6a-hexahydro-3,3a,5,5-tetramethylcyclopenta<4,5>pentalene-2,4-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 74145-63-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,4 and 5 respectively; the second part has 2 digits, 6 and 3 respectively. Calculate Digit Verification of CAS Registry Number 74145-63: (7*7)+(6*4)+(5*1)+(4*4)+(3*5)+(2*6)+(1*3)=124 124 % 10 = 4 So 74145-63-4 is a valid CAS Registry Number.