1291789-73-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1291789-73-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,1,7,8 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1291789-73:
(9*1)+(8*2)+(7*9)+(6*1)+(5*7)+(4*8)+(3*9)+(2*7)+(1*3)=205
205 % 10 = 5
So 1291789-73-5 is a valid CAS Registry Number.