11138-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 11138-61-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,1,1,3 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 11138-61:
(7*1)+(6*1)+(5*1)+(4*3)+(3*8)+(2*6)+(1*1)=67
67 % 10 = 7
So 11138-61-7 is a valid CAS Registry Number.