30657-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30657-17-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,6,5 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 30657-17:
(7*3)+(6*0)+(5*6)+(4*5)+(3*7)+(2*1)+(1*7)=101
101 % 10 = 1
So 30657-17-1 is a valid CAS Registry Number.