23156-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23156-98-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,1,5 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 23156-98:
(7*2)+(6*3)+(5*1)+(4*5)+(3*6)+(2*9)+(1*8)=101
101 % 10 = 1
So 23156-98-1 is a valid CAS Registry Number.