331657-90-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331657-90-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,6,5 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 331657-90:
(8*3)+(7*3)+(6*1)+(5*6)+(4*5)+(3*7)+(2*9)+(1*0)=140
140 % 10 = 0
So 331657-90-0 is a valid CAS Registry Number.