147665-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 147665-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,6,6 and 5 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 147665-81:
(8*1)+(7*4)+(6*7)+(5*6)+(4*6)+(3*5)+(2*8)+(1*1)=164
164 % 10 = 4
So 147665-81-4 is a valid CAS Registry Number.