461-89-2

Basic information

• Product Name: 6-Azauracil
• Synonyms: 4(6)-Azauracil;As-Triazine-3,5(2H,4H)-dione;As-Triazine-3,5-diol;Azauracil;AZU;IPO 3834;ipo3834;NSC 3425
• CAS NO: 461-89-2
• Molecular Formula: C₃H₃N₃O₂
• Molecular Weight: 113.07
• EINECS: 207-318-0
• Product Categories: Pyridines, Pyrimidines, Purines and Pteredines;Biochemistry;Nucleobases and their analogs;Nucleosides, Nucleotides & Related Reagents;Nucleic acids;NULL
• Mol File: 461-89-2.mol
• Article Data: 8

Chemical Properties

• Melting Point: 274-275 °C(lit.)
• Boiling Point: 211.75°C (rough estimate)
• Flash Point: 258.3 °C
• Appearance: White to light yellow/Fine Crystalline Powder
• Density: 1.5988 (rough estimate)
• Refractive Index: 1.4264 (estimate)
• Storage Temp.: Store below +30°C.
• PKA: 7.78±0.20(Predicted)
• Water Solubility: Partly soluble in water, ethanol, DMSO, and 1 M NH4OH (50 mg/ml).
• BRN: 116472
• CAS DataBase Reference: 6-Azauracil(CAS DataBase Reference)
• NIST Chemistry Reference: 6-Azauracil(461-89-2)
• EPA Substance Registry System: 6-Azauracil(461-89-2)

Safety Data

• Hazard Codes: Xi,T
• Statements: 36/37/38-63-25
• Safety Statements: 26-36-45-38-36/37/39
• WGK Germany: 3
• RTECS: XY7700000
• F: 10-23
• TSCA: Yes
• HazardClass: IRRITANT
• Hazardous Substances Data: 461-89-2(Hazardous Substances Data)

Usage

Chemical Properties

white to light yellow fine crystalline powder

Uses

6-Azauracil (6-AU) is used as a growth inhibitor of various microorganisms via depletion of intracellular GTP and UTP nucleotide pools. 6-Azauracil has been widely used in investigations on modulation of transcription, especially in yeast models.

Definition

ChEBI: 6-azauracil is a 1,2,4-triazine compound having oxo-substituents at the 3- and 5-positions. It has a role as an antimetabolite. It is a member of 1,2,4-triazines and a nucleobase analogue.

Synthesis Reference(s)

The Journal of Organic Chemistry, 23, p. 1522, 1958 DOI: 10.1021/jo01104a033

Biochem/physiol Actions

6-Azauracil (6-AU) is a pyrimidine analog of uracil and exhibits antitumor activity. It inhibits the growth of various microorganisms by depleting intracellular guanosine triphosphate (GTP)?and uridine?triphosphate (UTP) nucleotide pools.

Safety Profile

Poison by intraperitoneal route. Experimental reproductive effects. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.

Mode of action

6-Azauracil is a growth inhibitor effective on a variety of microorganisms. It functions by depleting the intracellular GTP and UTP nucleotide supply. Mutations in transcriptional elongation machinery, as well as mutations in a variety of other pathways, exaggerate the growth defect of cells in the presence of 6 AU.

InChI:InChI=1/C3H5N3O2/c7-2-1-4-6-3(8)5-2/h4H,1H2,(H2,5,6,7,8)

Upstream product

• 928-73-4 glyoxylic acid semicarbazone 
• 13924-15-7 3,5-dioxo-2,3,4,5-tetrahydro-1,2,4-triazine-6-carboxylic acid 
• 626-08-4 6-aza-2-thiouracil 
• 18802-37-4 6-aza-5,6-dihydrouracil 

Downstream Products

• 59631-75-3 3,5-dichloro-1,2,4-triazine 
• 18802-37-4 6-aza-5,6-dihydrouracil 
• 1627-37-8 6-aza-4-thiouracil 
• 461-90-5 3,5-dithioxo-2,3,4,5-tetrahydrotriazine 
• 4956-05-2 6-bromo-1,2,4-triazine-3,5(2H,4H)-dione 
• 54-25-1 6-Azauridine 
• 101760-68-3 5-(phenylselenenyl)-6-azauracil 
• 17331-61-2 3,5-bis(trimethylsilyloxy)-1,2,4-triazine 
• 622379-83-3 C₃₀H₂₅N₃O₉ 
• 120-89-8 parabanic acid 
• 61466-03-3 5-methyl-4-[(5-methyl-3-oxo-2-phenyl-2,4-dihydro-3H-pyrazol-4-yl)methylene]-2-phenyl-2,4-dihydro-3H-pyrazol-3-one 
• 206269-47-8 1-(2',3',5'-tri-O-benzoyl-β-L-ribofuranosyl)-6-azauracil 
• 15677-10-8 6-azido-1,3-dimethyluracil 
• 1207441-70-0 4-(4-chlorobenzyl)-1,2,4-triazine-3,5(2H,4H)-dione 

Relevant articles and documents

Synthesis of novel 3-substituted-5H-benzo[5,6][1, 4]thiazino[3,2-e][1,2,4]triazines and their 15-lipoxygenase inhibitory activity

A new group of 3-substituted-5H-benzo[5,6][1,4]thiazino[3,2-e][1,2,4]triazines was designed, synthesized and evaluated as inhibitors of 15-lipoxygenase (15-LO), and the results were compared with those of standard ligand 4-methyl-2-(4-methylpiperazin-1-yl)pyrimido[4,5-b][1,4]benzothiazine (4-MMPB). Among the newly designed ligands, compound 9e showed the best IC50 of 15-LO inhibition (IC50?=?38?μM). The docking calculations were performed in MOE software based on the function of force-field scoring, in order to study the interaction of these new compounds and standard ligand with 15-LO. The docking study implied that these ligands have hydrogen bond interaction with the residue of active site of 15-LO.

An improved synthesis of the 5-HT1A receptor agonist Eptapirone free base

Eptapirone free base, F11440,4-methyl-2-(4-(4-(pyrimidin-2-yl)piperazin-1-yl)butyl)-1,2,4-triazine-3,5(2H,4H)-dione, represents a potent and selective 5-HT1A receptor agonist with high efficacy and the potential to regulate anxiety disorders. Herein, we report a method to retro-synthesize eptapirone free base. The compound consists of heterocyclic aromatic portion and aliphatic portion, and the synthetic route consisted of a total of nine steps with an overall yield of 8.8% starting from the commercially available materials. The key steps in the synthetic method involved: (1) using sodium hydroxide and ethylene glycol as solvent resulted in a better cyclization and yield (61.6%) of 1,2,4-triazine-3,5(2H,4H)-dione; (2) an acceptable yield (63.1%) of 4-tert-butyl(pyrimidin-2-yl)piperazine-1-carboxylate was obtained under an optimized conditions of using triethylamine as a base, ethanol as a solvent, and a reaction temperature of 50?°C for 16?h with non-metal catalysis and less byproducts; (3) the reaction step of eptapirone could get a better yield (49.6%) with an optimized condition of potassium carbonate as a base, acetonitrile as a solvent, NaI as a catalyst, and a reaction temperature of 50?°C for 12?h by nucleophilic substitution reaction. The main advantages of this route were an acceptable product purity, the commercial availability of all starting materials and the absence of high temperature, high pressure and noble metal catalysts, which could result in more feasible commercial applications.

PROCESS FOR STRAIGHTENING KERATIN FIBRES WITH A HEATING MEANS AND DENATURING AGENTS

The invention relates to a process for straightening keratin fibres, comprising: (i) a step in which a straightening composition containing at least two denaturing agents is applied to the keratin fibres, (ii) a step in which the temperature of the keratin fibres is raised, using a heating means, to a temperature of between 110 and 250° C.