87339-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87339-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,3 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87339-81:
(7*8)+(6*7)+(5*3)+(4*3)+(3*9)+(2*8)+(1*1)=169
169 % 10 = 9
So 87339-81-9 is a valid CAS Registry Number.