71797-18-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71797-18-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,9 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71797-18:
(7*7)+(6*1)+(5*7)+(4*9)+(3*7)+(2*1)+(1*8)=157
157 % 10 = 7
So 71797-18-7 is a valid CAS Registry Number.