1421697-99-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421697-99-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,6,9 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1421697-99:
(9*1)+(8*4)+(7*2)+(6*1)+(5*6)+(4*9)+(3*7)+(2*9)+(1*9)=175
175 % 10 = 5
So 1421697-99-5 is a valid CAS Registry Number.