90591-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90591-52-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,9 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 90591-52:
(7*9)+(6*0)+(5*5)+(4*9)+(3*1)+(2*5)+(1*2)=139
139 % 10 = 9
So 90591-52-9 is a valid CAS Registry Number.