1189779-54-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1189779-54-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,9,7,7 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1189779-54:
(9*1)+(8*1)+(7*8)+(6*9)+(5*7)+(4*7)+(3*9)+(2*5)+(1*4)=231
231 % 10 = 1
So 1189779-54-1 is a valid CAS Registry Number.