1623159-90-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1623159-90-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,3,1,5 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1623159-90:
(9*1)+(8*6)+(7*2)+(6*3)+(5*1)+(4*5)+(3*9)+(2*9)+(1*0)=159
159 % 10 = 9
So 1623159-90-9 is a valid CAS Registry Number.