143468-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143468-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,4,6 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 143468-44:
(8*1)+(7*4)+(6*3)+(5*4)+(4*6)+(3*8)+(2*4)+(1*4)=134
134 % 10 = 4
So 143468-44-4 is a valid CAS Registry Number.
143468-44-4Relevant articles and documents
Synthesis of 2-aryl-3-nitro-4H-1-benzopyran-4-ones
Dauzonne,Grandjean
, p. 677 - 680 (2007/10/02)
2-Aryl-3-nitro-4H-1-benzopyran-4-ones (or 3-nitroflavones) 3 are conveniently prepared in good yields using a two-step approach starting from 2-aryl-3-chloro-3,4-dihydro-4-hydroxy-3-nitro-2H-1-benzopyrans 1. A general synthesis of the novel 2-aryl-3-chlor
