57838-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57838-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,8,3 and 8 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57838-80:
(7*5)+(6*7)+(5*8)+(4*3)+(3*8)+(2*8)+(1*0)=169
169 % 10 = 9
So 57838-80-9 is a valid CAS Registry Number.