Welcome to LookChem.com Sign In|Join Free

CAS

  • or

223676-84-4

Post Buying Request

223676-84-4 Suppliers

Recommended suppliersmore

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

223676-84-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223676-84-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,6,7 and 6 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 223676-84:
(8*2)+(7*2)+(6*3)+(5*6)+(4*7)+(3*6)+(2*8)+(1*4)=144
144 % 10 = 4
So 223676-84-4 is a valid CAS Registry Number.

223676-84-4Downstream Products

223676-84-4Relevant articles and documents

Substituent effects on absorption and fluorescence spectra of carbostyrils

Fabian, Walter M.F.,Niederreiter, Karlheinz S.,Uray, Georg,Stadlbauer, Wolfgang

, p. 209 - 220 (2007/10/03)

Absorption and fluorescence spectra as well as quantum yields of a series of differently substituted carbostyrils (quinolin-2(1H)-ones) are reported. Especially for compounds containing donor substituents in position 6, substantial bathochromic shifts (comparable to analogous coumarins) of both absorption as well as fluorescence transitions are obtained. High absorption intensities and quantum yields are found for 7-donor substituted isomers. Semiempirical molecular orbital calculations (AMI for structures, ZINDO for electronic transition energies) prove to be a suitable tool for the prediction of absorption and fluorescence properties of these compounds. Ab initio and density functional calculations establish the lactam form as the dominant tautomer of the parent quinolin-2(1H)-one.

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 223676-84-4