1669415-86-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1669415-86-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,6,9,4,1 and 5 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1669415-86:
(9*1)+(8*6)+(7*6)+(6*9)+(5*4)+(4*1)+(3*5)+(2*8)+(1*6)=214
214 % 10 = 4
So 1669415-86-4 is a valid CAS Registry Number.