57042-90-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57042-90-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,4 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57042-90:
(7*5)+(6*7)+(5*0)+(4*4)+(3*2)+(2*9)+(1*0)=117
117 % 10 = 7
So 57042-90-7 is a valid CAS Registry Number.