Welcome to LookChem.com Sign In|Join Free

CAS

  • or

99387-18-5

Post Buying Request

99387-18-5 Suppliers

Recommended suppliersmore

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

99387-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99387-18-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,3,8 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 99387-18:
(7*9)+(6*9)+(5*3)+(4*8)+(3*7)+(2*1)+(1*8)=195
195 % 10 = 5
So 99387-18-5 is a valid CAS Registry Number.

99387-18-5Downstream Products

99387-18-5Relevant articles and documents

Liquid Crystalline Compounds Bearing Pyridine Ring: 3-(4-Alkoxyphenylazoxy)-6-alkoxypyridines

Kamogawa, Hiroyoshi,Kasai, Tsuneharu

, p. 69 - 78 (2007/10/02)

3-(4-Alkoxyphenylazo)-6-alkoxypyridines (6) with n-alkoxyl (C1-C6) groups were synthesized by the coupling reaction of phenol with 6-alkoxy-3-pyridine diazonium chloride prepared from 2-chloro-5-nitropyridine via 2-alkoxy-5-nitro and 2-alkoxy-5-aminopyridines and subsequent etherification with n-alkyl iodides.Mild oxidation of 6 with hydrogen peroxide in acetic acid provided 3-6-alkoxy-pyridines (7) containing nearly equimolar amounts of ONN (8) and NNO (8') isomers.Centrifugal liquid chromatography satisfactorily separated these two isomers.Mesomorphic behaviors of 8 and 8' are characteristic in that the pyridine ring exerts polar effects and 8 are more balanced in polarity than 8'.Compounds 7 possess rather lower mesomorphic ranges than 8 and 8'.Some of compounds 6 indicate mesomorphic ranges but generally azo compounds are inferior to azoxy ones.

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 99387-18-5