3657-22-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3657-22-5 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, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 3657-22:
(6*3)+(5*6)+(4*5)+(3*7)+(2*2)+(1*2)=95
95 % 10 = 5
So 3657-22-5 is a valid CAS Registry Number.