1321687-09-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1321687-09-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,1,6,8 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1321687-09:
(9*1)+(8*3)+(7*2)+(6*1)+(5*6)+(4*8)+(3*7)+(2*0)+(1*9)=145
145 % 10 = 5
So 1321687-09-5 is a valid CAS Registry Number.