3657-19-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3657-19-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,5 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 3657-19:
(6*3)+(5*6)+(4*5)+(3*7)+(2*1)+(1*9)=100
100 % 10 = 0
So 3657-19-0 is a valid CAS Registry Number.