1309659-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1309659-91-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,6,5 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1309659-91:
(9*1)+(8*3)+(7*0)+(6*9)+(5*6)+(4*5)+(3*9)+(2*9)+(1*1)=183
183 % 10 = 3
So 1309659-91-3 is a valid CAS Registry Number.