1040687-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1040687-21-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,0,6,8 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1040687-21:
(9*1)+(8*0)+(7*4)+(6*0)+(5*6)+(4*8)+(3*7)+(2*2)+(1*1)=125
125 % 10 = 5
So 1040687-21-5 is a valid CAS Registry Number.