1191998-54-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1191998-54-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,1,9,9 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1191998-54:
(9*1)+(8*1)+(7*9)+(6*1)+(5*9)+(4*9)+(3*8)+(2*5)+(1*4)=205
205 % 10 = 5
So 1191998-54-5 is a valid CAS Registry Number.