90724-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90724-83-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,2 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90724-83:
(7*9)+(6*0)+(5*7)+(4*2)+(3*4)+(2*8)+(1*3)=137
137 % 10 = 7
So 90724-83-7 is a valid CAS Registry Number.