30657-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30657-49-9 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, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 30657-49:
(7*3)+(6*0)+(5*6)+(4*5)+(3*7)+(2*4)+(1*9)=109
109 % 10 = 9
So 30657-49-9 is a valid CAS Registry Number.