3811-34-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3811-34-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,8,1 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3811-34:
(6*3)+(5*8)+(4*1)+(3*1)+(2*3)+(1*4)=75
75 % 10 = 5
So 3811-34-5 is a valid CAS Registry Number.