Welcome to LookChem.com Sign In|Join Free

CAS

  • or

123331-32-8

Post Buying Request

123331-32-8 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

123331-32-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123331-32-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,3,3 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123331-32:
(8*1)+(7*2)+(6*3)+(5*3)+(4*3)+(3*1)+(2*3)+(1*2)=78
78 % 10 = 8
So 123331-32-8 is a valid CAS Registry Number.

123331-32-8Relevant articles and documents

Regiospecific Synthesis, Structure, and Fluorescence Properties of Highly Substituted Imidazopyridines and Pyridobenzimidazoles

Knoelker, Hans-Joachim,Boese, Roland,Hitzemann, Rainer

, p. 327 - 339 (2007/10/02)

1-(Arylacetyl)imidazoles 1 react with acetylenedicarboxylic esters to provide highly functionalized imidazopyridines 2 in up to 89percent yield.The scope and limitations of this novel condensation reaction have been investigated, and a mechanistic interpretation is presented.A strong effect on the yield of this reaction is observed for electron-donating and electron-withdrawing substituents in the para position of the aryl ring.Moreover, the transformation is shown to proceed in a regiospecific manner starting with 4,5-unsymmetrically substituted 1-(arylacetyl)imidazoles (1d-g) and is extended to the synthesis of the corresponding pyridobenzimazoles 12.The crystal structure of derivative 2a has been determined by X-ray analysis.Imidazopyridines 2 and pyridobenzimidazoles 12, obtained by this procedure, are highly fluorescent in the visible region with characteristically large Stokes shifts.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 123331-32-8