1023499-77-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1023499-77-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,3,4,9 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1023499-77:
(9*1)+(8*0)+(7*2)+(6*3)+(5*4)+(4*9)+(3*9)+(2*7)+(1*7)=145
145 % 10 = 5
So 1023499-77-5 is a valid CAS Registry Number.