1215582-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1215582-91-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,5,5,8 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1215582-91:
(9*1)+(8*2)+(7*1)+(6*5)+(5*5)+(4*8)+(3*2)+(2*9)+(1*1)=144
144 % 10 = 4
So 1215582-91-4 is a valid CAS Registry Number.