90644-54-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90644-54-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,4 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 90644-54:
(7*9)+(6*0)+(5*6)+(4*4)+(3*4)+(2*5)+(1*4)=135
135 % 10 = 5
So 90644-54-5 is a valid CAS Registry Number.