methyl 5-<(4aS*,8aS*)-3,4,4a,5,6,7,8,8a-octahydro-2,5,5,8a-tetramethylnaphthalenyl>-3-oxo-pentanoate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 133887-40-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,8 and 7 respectively; the second part has 2 digits, 4 and 0 respectively. Calculate Digit Verification of CAS Registry Number 133887-40: (8*1)+(7*3)+(6*3)+(5*8)+(4*8)+(3*7)+(2*4)+(1*0)=148 148 % 10 = 8 So 133887-40-8 is a valid CAS Registry Number.