53657-59-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 53657-59-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,6,5 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 53657-59:
(7*5)+(6*3)+(5*6)+(4*5)+(3*7)+(2*5)+(1*9)=143
143 % 10 = 3
So 53657-59-3 is a valid CAS Registry Number.