1023551-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1023551-34-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,3,5,5 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1023551-34:
(9*1)+(8*0)+(7*2)+(6*3)+(5*5)+(4*5)+(3*1)+(2*3)+(1*4)=99
99 % 10 = 9
So 1023551-34-9 is a valid CAS Registry Number.