117994-55-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117994-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,9 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 117994-55:
(8*1)+(7*1)+(6*7)+(5*9)+(4*9)+(3*4)+(2*5)+(1*5)=165
165 % 10 = 5
So 117994-55-5 is a valid CAS Registry Number.