Reactive Dyes Derived from 2, 4, 6, 7-Terachloropteridine

Synthesis, characterization and spectroscopic properties of some new azo dyes derived from 6-aminopyrimidine-2, 4(1H, 3H) – dione

A series of new azo amino uracil dyes were synthesized by diazotization of nine aromatic amines using sodium nitrite and hydrochloric acid and subsequent coupling to 6-aminopyrimidine-2, 4(1H, 3H) – dione. The effects of solvents, substituents, acid and base on the visible absorption maxima of the dyes were also discussed.

KbP 23 . 1 - 9 . 4 - 6 . 7 - 4 . 4 - 2 .

The gene for the prototype acute phase reactant, Creactive protein, has been isolated from two X phage libraries containing inserted human DNA fragments using synthetic oligonucleotide probes. Nucleotide sequence analysis indicates that after coding for a signal peptide of 18 amino acids and the first two amino acids of the mature protein, there is an intron of 278 base pairs followed by the nu...

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Based on the frequent requests for help that I have received in the past months from users who want to configure TEX or LTEX for typesetting in several languages, it seems that this sort of information is not adequately covered in the documentation available to most do-it-yourself users. This tutorial is intended to give basic information on this topic. The related subject of hyphenation patter...

7-(6-Bromo­hex­yloxy)-4-methyl-2H-chromen-2-one

In the title mol-ecule, C(16)H(19)BrO(3), all non-H atoms apart from the Br atom are approximately coplanar, with a maximum deviation of 0.242 (4) Å. The C-C-C-Br torsion angle is 66.5 (4)°.

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