100056-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100056-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,0,5 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 100056-91:
(8*1)+(7*0)+(6*0)+(5*0)+(4*5)+(3*6)+(2*9)+(1*1)=65
65 % 10 = 5
So 100056-91-5 is a valid CAS Registry Number.