What's the difference between alizarin and quinizarin?
Alizarin
Definition:
(n.) A coloring principle, C14H6O2(OH)2, found in madder, and now produced artificially from anthracene. It produces the Turkish reds.
Example Sentences:
(1) The most successful dyes were phenocyanin TC, gallein, fluorone black, alizarin cyanin BB and alizarin blue S. Celestin blue B with an iron mordant is quite successful if properly handled to prevent gelling of solutions.
(2) This malformation was demonstrated in alcian-blue- and alizarin-red-stained fetal skeletons by measurements of the distance between the cartilaginous ends of each vertebral arch.
(3) Malformations were detected by outer inspection for gross anomalies, by means of the razor blade technique for malformations of organs and by alizarin preparations for detecting anomalies of the osseuos skeleton.
(4) Other biologic substances producing a red color without the formation of precipitates showed a disappearance of the red color and resumption of the yellow color of alizarine red S above pH = 3.8.
(5) A novel and important observation made is that the different caffeine treatments affected the staining by alizarin of both claws and bones in a qualitatively and quantitatively similar manner.
(6) The fibular hemimelia observed in all drug-treated term fetuses stained with alizarin appeared to result from lack of development of the proximal half of the cartilage model.
(7) A method which localizes labile 5% ethylene glycol-bis-(beta-amino-ethyl ether)N-N'-tetraacetic acid-removable calcium in spherules within hypertrophied chondrocytes and in pericellular matrix using alizarin red S (ARS) is described.
(8) Freshly excised sheep corneal buttons were exposed to increasing concentrations of fluorouracil for four hours and were subsequently evaluated microscopically using vital staining with alizarin red and trypan blue.
(9) In the excised corneas, the cell borders were visualized by osmotically induced dilation of intercellular spaces, alizarin red staining, and a combination of alizarin red and trypan blue staining.
(10) Ruberythric acid and alizarin glucuronide, the biologic secretion product obtained from the alizarin derivative, stop the crystallization of calcium oxalate and calcium phosphate in the physiologic milieu of the urine.
(11) The naturally-occurring anthraquinones (AQs), alizarin (1,2-dihydroxyanthraquinone) and lucidin (1,3-dihydroxy-2-hydroxymethylanthraquinone), were incubated with DNA in the presence of S9 mix.
(12) A simple and sensitive spectrofluorimetric method for the determination of boron with Alizarin Red S is described.
(13) The chemical nature of the Alizarin red S reaction product in sites of calcium deposits is discussed.
(14) The endothelium was examined and re-examined at different intervals by using a phase contrast microscope and dual vital staining with alizarin-red S and trypan-blue.
(15) Growth and remodelling of the first cervical vertebra were studied in the rat by means of biometry, vital staining (alizarin red S and oxytetracycline), and histology.
(16) A new technique for the staining of the corneal endothelium is presented, in which the actions of the vital stain, rose bengal, and the intercellular stain, alizarin red S, are combined.
(17) Endothelial cell loss was determined by vital staining with Trypan blue and Alizarin red S. Average endothelial cell loss with the intercapsular technique was 1.2%; with the can opener technique the cell loss was 6.6%.
(18) Microsomal membranes prepared from the mesophilic yeast Candida lipolytica grown at 10 degrees C were hydrogenated by the homogeneous Pd-catalyst, palladium di (sodium alizarine sulfonate) (Pd(QS)2).
(19) The Michaelis constants for glucosyluridyl diphosphate (UDP-glucose) was 10.8 microM for 1,2-dihydroxy-9,10-anthraquinone (alizarin) 110 microM; the maximum rate of glucosylation reaction was 5.32 mumol per s per mg protein.
(20) In addition to reduced mineralization as detected by alizarin staining, significant changes were also observed in the extracellular matrix of the embryonic bones.
Quinizarin
Definition:
() A yellow crystalline substance produced artificially. It is isomeric with alizarin.
Example Sentences:
(1) Sweating was detected on all of the test areas by both the iodine-starch-paper technique and the quinizarin technique, but it was of widely varying intensity in different portions of the body.
(2) The results were compared with those defined by the quinizarine sweat test.
(3) The condensation of alkylenediamines with quinizarin or with 2,3-dihydro-1,4,5,8-tetrahydroxy-9,10-anthracenedione, followed by oxidation, gave 1,4-bis[aminoalkyl)amino]-9,10-anthracenediones.
(4) Racemic 7-hydroxy-9-oxa-anthracyclinone (5a) has been synthetised in seven steps from quinizarin (6) and its resolution achieved after glycosylation with 3,4-di-O-acetyl-2-deoxy-L-fucose.
(5) Dose-dependent, but weaker antimutagenic activity was observed for quinizarin, and a number of hydroxylated cinamic acid derivatives.