1139-69-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1139-69-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,3 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1139-69:
(6*1)+(5*1)+(4*3)+(3*9)+(2*6)+(1*9)=71
71 % 10 = 1
So 1139-69-1 is a valid CAS Registry Number.