253189-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 253189-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,1,8 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 253189-30:
(8*2)+(7*5)+(6*3)+(5*1)+(4*8)+(3*9)+(2*3)+(1*0)=139
139 % 10 = 9
So 253189-30-9 is a valid CAS Registry Number.