117803-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117803-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,8,0 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 117803-74:
(8*1)+(7*1)+(6*7)+(5*8)+(4*0)+(3*3)+(2*7)+(1*4)=124
124 % 10 = 4
So 117803-74-4 is a valid CAS Registry Number.