cis-(+/-)-1,2,3,5,7,8,9,9a-octahydro-1,8,8-trimethyl-6H-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 90414-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,4,1 and 4 respectively; the second part has 2 digits, 0 and 5 respectively. Calculate Digit Verification of CAS Registry Number 90414-05: (7*9)+(6*0)+(5*4)+(4*1)+(3*4)+(2*0)+(1*5)=104 104 % 10 = 4 So 90414-05-4 is a valid CAS Registry Number.