1609974-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1609974-69-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,9,7 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1609974-69:
(9*1)+(8*6)+(7*0)+(6*9)+(5*9)+(4*7)+(3*4)+(2*6)+(1*9)=217
217 % 10 = 7
So 1609974-69-7 is a valid CAS Registry Number.