291308-93-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 291308-93-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,3,0 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 291308-93:
(8*2)+(7*9)+(6*1)+(5*3)+(4*0)+(3*8)+(2*9)+(1*3)=145
145 % 10 = 5
So 291308-93-5 is a valid CAS Registry Number.