1138331-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1138331-77-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,8,3,3 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1138331-77:
(9*1)+(8*1)+(7*3)+(6*8)+(5*3)+(4*3)+(3*1)+(2*7)+(1*7)=137
137 % 10 = 7
So 1138331-77-7 is a valid CAS Registry Number.