305834-64-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 305834-64-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,5,8,3 and 4 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 305834-64:
(8*3)+(7*0)+(6*5)+(5*8)+(4*3)+(3*4)+(2*6)+(1*4)=134
134 % 10 = 4
So 305834-64-4 is a valid CAS Registry Number.