138578-90-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138578-90-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,7 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138578-90:
(8*1)+(7*3)+(6*8)+(5*5)+(4*7)+(3*8)+(2*9)+(1*0)=172
172 % 10 = 2
So 138578-90-2 is a valid CAS Registry Number.