1021996-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1021996-57-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,9,9 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1021996-57:
(9*1)+(8*0)+(7*2)+(6*1)+(5*9)+(4*9)+(3*6)+(2*5)+(1*7)=145
145 % 10 = 5
So 1021996-57-5 is a valid CAS Registry Number.