1023437-39-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1023437-39-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,3,4,3 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1023437-39:
(9*1)+(8*0)+(7*2)+(6*3)+(5*4)+(4*3)+(3*7)+(2*3)+(1*9)=109
109 % 10 = 9
So 1023437-39-9 is a valid CAS Registry Number.