Lumazine Struktur

Pteridin-2,4-diolmonohydrat

Bezeichnung:Pteridin-2,4-diolmonohydrat

CAS-Nr487-21-8

Englisch Name:Lumazine

CBNumberCB0271293

SummenformelC6H4N4O2

Molgewicht164.12

MOL-Datei487-21-8.mol

Synonyma

Pteridin-2,4-diolmonohydrat

Pteridin-2,4-diolmonohydrat physikalisch-chemischer Eigenschaften

Schmelzpunkt	300 °C
Siedepunkt	291.56°C (rough estimate)
Dichte	1.5129 (rough estimate)
Brechungsindex	1.6900 (estimate)
storage temp.	-20°C Freezer
Löslichkeit	DMSO (Slightly)
pka	pK1:<1.3;pK2:7.92 (25°C)
Aggregatzustand	crystalline
Farbe	yellow
Wasserlöslichkeit	0.125 g/100 mL (25 ºC)
Merck	14,5596
BRN	157503
InChI	1S/C6H4N4O2/c11-5-3-4(8-2-1-7-3)9-6(12)10-5/h1-2H,(H2,8,9,10,11,12)
InChIKey	UYEUUXMDVNYCAM-UHFFFAOYSA-N
SMILES	Oc1nc(O)c2nccnc2n1
CAS Datenbank	487-21-8(CAS DataBase Reference)
NIST chemische Informationen	Lumazine(487-21-8)
EPA chemische Informationen	Lumazine (487-21-8)

Sicherheit

S-Sätze:	22-24/25
WGK Germany	3
RTECS-Nr.	UO3416000
TSCA	TSCA listed
HS Code	29335995
Speicherklasse	11 - Combustible Solids

Gefahreninformationscode (GHS)

Lumazine Chemische Eigenschaften,Einsatz,Produktion Methoden

S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
LIGHT YELLOW TO OCHRE POWDER
Verwenden
Lumazine is a new MALDI matrix for complex (phospho)lipid mixtures analysis.
Definition
ChEBI: A 2,4-dihydroxypteridine.
Synthese

25911-65-3

124-38-9

487-21-8

The general procedure for the synthesis of pteridine-2,4-dione from 3-aminopyrazine-2-carbonitrile (1 mmol, 120 mg) and carbon dioxide was as follows: 3-aminopyrazine-2-carbonitrile (Compound 1d) and the ionic liquid [HDBN+][TFE-] (6 mmol, 1.35 g) were added to a 10 mL round bottom flask. The reaction mixture was heated to 90 °C under carbon dioxide atmosphere for 20 hours. After completion of the reaction, the system was cooled to room temperature and the pH was adjusted to neutral by adding saturated aqueous NH4Cl solution. The reaction mixture was extracted with dichloromethane (20 mL x 3), the organic phases were combined and dried over anhydrous sodium sulfate. After filtration, the organic phase was concentrated under reduced pressure. Purification by silica gel column chromatography (eluent ratio of dichloromethane:methanol=15:1) afforded a light yellow solid pteridine-2,4-dione (compound 2d, 141 mg) in 86% yield.
läuterung methode
Crystallise the dione from water. It has also been purified as for pterin below. [Dallacker & Steiner Justus Liebigs Ann Chem 660 98 1962, Beilstein 26 III/IV 2489.]
Einzelnachweise
[1] Patent: CN107698587, 2018, A. Location in patent: Paragraph 0039; 0040; 0041

Lumazine Upstream-Materialien And Downstream Produkte

Pteridin-2,4-diolmonohydrat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

487-21-8, Lumazine Verwandte Suche:

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