(3R,3aS,7R,9aR)-3,9-Dimethyl-2,3,4,5,7,9a-hexahydro-1H-3a,7-methano-cyclopentacycloocten-6-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 205927-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,9,2 and 7 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 205927-67: (8*2)+(7*0)+(6*5)+(5*9)+(4*2)+(3*7)+(2*6)+(1*7)=139 139 % 10 = 9 So 205927-67-9 is a valid CAS Registry Number.