(2R,3aS,4R,7S,7aR)-2-Methyl-2,3,3a,4,7,7a-hexahydro-4,7-methano-inden-1-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 136656-41-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,6,5 and 6 respectively; the second part has 2 digits, 4 and 1 respectively. Calculate Digit Verification of CAS Registry Number 136656-41: (8*1)+(7*3)+(6*6)+(5*6)+(4*5)+(3*6)+(2*4)+(1*1)=142 142 % 10 = 2 So 136656-41-2 is a valid CAS Registry Number.