100347-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100347-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,3,4 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 100347-81:
(8*1)+(7*0)+(6*0)+(5*3)+(4*4)+(3*7)+(2*8)+(1*1)=77
77 % 10 = 7
So 100347-81-7 is a valid CAS Registry Number.