5-Methyl-2-pyridon

Bezeichnung:5-Methyl-2-pyridon

CAS-Nr1003-68-5

Englisch Name:2-Hydroxy-5-methylpyridine

CBNumberCB5114924

SummenformelC6H7NO

Molgewicht109.13

MOL-Datei1003-68-5.mol

Synonyma

5-Methyl-2-pyridon

5-Methyl-2-pyridon physikalisch-chemischer Eigenschaften

Schmelzpunkt	183-187 °C (lit.)
Siedepunkt	304.2±15.0 °C(Predicted)
Dichte	1.053±0.06 g/cm3(Predicted)
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	DMSO (Slightly), Ethanol (Slightly), Methanol (Slightly)
Aggregatzustand	Solid
pka	12.43±0.10(Predicted)
Farbe	Pale Yellow to Light Yellow
BRN	107074
InChI	InChI=1S/C6H7NO/c1-5-2-3-6(8)7-4-5/h2-4H,1H3,(H,7,8)
InChIKey	SOHMZGMHXUQHGE-UHFFFAOYSA-N
SMILES	C1(=O)NC=C(C)C=C1
CAS Datenbank	1003-68-5(CAS DataBase Reference)
NIST chemische Informationen	2(1H)-pyridinone, 5-methyl-(1003-68-5)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22-37/38-41-36/37/39
S-Sätze:	26-36-37
WGK Germany	3
HS Code	29333990

Gefahreninformationscode (GHS)

2-Hydroxy-5-methylpyridine Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R37/38:Reizt die Atmungsorgane und die Haut.
R41:Gefahr ernster Augenschäden.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
White Solid
Verwenden
2-Hydroxy-5-methylpyridine (cas# 1003-68-5) is a useful compound for organic synthesis. In particular it has been used for the diastereoselective preparation of cyclobutane-fused pyridinyl sulfonyl fluorides. 2-hydroxy-5-methylpyridine and Iodobenzene were the impurities present in Pirfenidone (PFD) drug substance. PFD is a novel antifibrotic agent approved for mild to moderate Idiopathic pulmonary fibrosis (IPF) as orphan drug[1].
Definition
ChEBI: 5-Methyl-2-pyridinol is a member of methylpyridines.
Synthese
3-cyano-6-hydroxypyridine and sodium lauryl sulfate were added to a mixed solvent of n-butanol and water. Subsequently, the temperature was raised to 50 °C., and sulfuric acid water obtained by dissolving 98% sulfuric acid in water was added dropwise at the temperature. After stirring for about 20 minutes, the mixture was cooled to room temperature, and 5% Pd / C was added. The system was replaced with hydrogen, and hydrogenation was carried out at atmospheric pressure for 6 hours. After the reaction was completed, the catalyst was removed by filtration, and the solution was washed with 10% sodium hydroxide aqueous solution. After partially neutralizing to H = 5 and extraction with n-butanol, a solution of crude 3-methyl-6-hydroxypyridine in butanol was obtained. When this solution was quantified by liquid chromatography, the pass-through rate was 99.2%, and the yield of 2-hydroxy-5-methylpyridine was 83%.
Einzelnachweise
[1] Suresh Babu Bodempudi, ;K. S. Reddy, Ravichandra Babur. “Development and Substantiation of a RP-HPLC Method for Monitoring of Impurities in Pirfenidone Drug Substance.” 美国分析化学(英文) 6 1 (2015): 1019–1029.

2-Hydroxy-5-methylpyridine Upstream-Materialien And Downstream Produkte

5-Methyl-2-pyridon Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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