69749-90-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69749-90-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,7,4 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 69749-90:
(7*6)+(6*9)+(5*7)+(4*4)+(3*9)+(2*9)+(1*0)=192
192 % 10 = 2
So 69749-90-2 is a valid CAS Registry Number.