77171-53-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77171-53-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,7 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77171-53:
(7*7)+(6*7)+(5*1)+(4*7)+(3*1)+(2*5)+(1*3)=140
140 % 10 = 0
So 77171-53-0 is a valid CAS Registry Number.