1,5-Dimethoxy-1,4:5,8-diethano-1,4,4a,5,8,9a-hexahydro-anthracendion-(9,10) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 99730-39-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,7,3 and 0 respectively; the second part has 2 digits, 3 and 9 respectively. Calculate Digit Verification of CAS Registry Number 99730-39: (7*9)+(6*9)+(5*7)+(4*3)+(3*0)+(2*3)+(1*9)=179 179 % 10 = 9 So 99730-39-9 is a valid CAS Registry Number.