73809-11-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73809-11-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,0 and 9 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 73809-11:
(7*7)+(6*3)+(5*8)+(4*0)+(3*9)+(2*1)+(1*1)=137
137 % 10 = 7
So 73809-11-7 is a valid CAS Registry Number.