117780-54-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117780-54-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,8 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 117780-54:
(8*1)+(7*1)+(6*7)+(5*7)+(4*8)+(3*0)+(2*5)+(1*4)=138
138 % 10 = 8
So 117780-54-8 is a valid CAS Registry Number.