2156-00-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2156-00-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,5 and 6 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2156-00:
(6*2)+(5*1)+(4*5)+(3*6)+(2*0)+(1*0)=55
55 % 10 = 5
So 2156-00-5 is a valid CAS Registry Number.