100978-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100978-42-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,9,7 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 100978-42:
(8*1)+(7*0)+(6*0)+(5*9)+(4*7)+(3*8)+(2*4)+(1*2)=115
115 % 10 = 5
So 100978-42-5 is a valid CAS Registry Number.