57638-84-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57638-84-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,3 and 8 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 57638-84:
(7*5)+(6*7)+(5*6)+(4*3)+(3*8)+(2*8)+(1*4)=163
163 % 10 = 3
So 57638-84-3 is a valid CAS Registry Number.