21243-26-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21243-26-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,4 and 3 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21243-26:
(7*2)+(6*1)+(5*2)+(4*4)+(3*3)+(2*2)+(1*6)=65
65 % 10 = 5
So 21243-26-5 is a valid CAS Registry Number.
InChI:InChI=1/C15H10FNS/c16-12-6-3-5-10-14-11(8-18-15(10)12)9-4-1-2-7-13(9)17-14/h1-7,17H,8H2