2901-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2901-71-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,0 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2901-71:
(6*2)+(5*9)+(4*0)+(3*1)+(2*7)+(1*1)=75
75 % 10 = 5
So 2901-71-5 is a valid CAS Registry Number.