(3aβ,3bα,4α,6aα,7β)-3a,3b,5,6,6a,7-hexahydro-3a,5,5-trimethyl-4,7-dihydroxy-3-methylene-4H-cyclopenta<4,5>pentalen-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 74145-68-9 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 8 respectively. Calculate Digit Verification of CAS Registry Number 74145-68: (7*7)+(6*4)+(5*1)+(4*4)+(3*5)+(2*6)+(1*8)=129 129 % 10 = 9 So 74145-68-9 is a valid CAS Registry Number.