6,7-Dihydro-5-methyl-5H-cyclopentapyrazin

Bezeichnung:6,7-Dihydro-5-methyl-5H-cyclopentapyrazin

CAS-Nr23747-48-0

Englisch Name:6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine

CBNumberCB3348743

SummenformelC8H10N2

Molgewicht134.18

MOL-Datei23747-48-0.mol

Synonyma

6,7-Dihydro-5-methyl-5H-cyclopentapyrazin

6,7-Dihydro-5-methyl-5H-cyclopentapyrazin physikalisch-chemischer Eigenschaften

Schmelzpunkt	121-123 °C
Siedepunkt	96-99 °C20 mm Hg(lit.)
Dichte	1.055 g/mL at 25 °C(lit.)
FEMA	3306 \| 5H-5-METHYL-6,7-DIHYDROCYCLOPENTA(B)PYRAZINE
Brechungsindex	n20/D 1.527(lit.)
Flammpunkt	174 °F
storage temp.	Inert atmosphere,Room Temperature
pka	1.85±0.40(Predicted)
Aggregatzustand	clear liquid
Farbe	Colorless to Light yellow to Light orange
Geruch (Odor)	nutty, roasted odor
Geruchsart	earthy
Wasserlöslichkeit	insoluble
JECFA Number	781
InChIKey	YZEFQPIMXZVPKP-UHFFFAOYSA-N
LogP	1.33
NIST chemische Informationen	5H-5-methyl-6,7-dihydrocyclopentapyrazine(23747-48-0)
EPA chemische Informationen	5H-Cyclopentapyrazine, 6,7-dihydro-5-methyl- (23747-48-0)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36/37/39
WGK Germany	3
TSCA	Yes
HS Code	29339900

Gefahreninformationscode (GHS)

6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Beschreibung
5H-5-Methyl-6,7-dihydrocyclopenta(-b)pyrazine has an earthy, baked potato, peanut, roasted odor. It may be prepared from condensation of 2-hydroxy-3-methyl-2-cyclopentene-l-one and ethylene diamine; by condensing a cyclopentenolone with alkylenediamines, or alternatively, an aliphatic α-diketone with 1,2-diamino cyclopentane; the resulting product is dehydrogenated in the presence of palladium over activated charcoal or copper chromite.
Chemische Eigenschaften
clear yellow to yellow-orange to brown liquid
Chemische Eigenschaften
5H-5-Methyl-6,7-dihydrocyclopenta(b)pyrazine has an earthy, peanut, roasted odor
Occurrence
Reported found in peanuts, filberts, asparagus, potato wheat and rye bread, cooked beef, pork, pork liver, beer, cocoa, coffee, green tea, barley, filberts, almond, sesame seed, malt and wort
Verwenden
5-Methyl-6,7-dihydrocyclopentapyrazine can be used for drug storage packaging and antibacterial composition.
Definition
ChEBI: 6,7-Dihydro-5-methyl-5H-cyclopenta[b]pyrazine is a member of pyrazines.
synthetische
From condensation of 2-hydroxy-3-methyl-2-cyclopentene-1-one and ethylene diamine; by condensing a cyclopentenolone with alkylenediamines, or alternatively, and aliphatic α-diketone with 1,2-diamino cyclopentane; the resulting product is dehydrogenated in the presence of palladium over activated charcoal or copper chromite.
Aroma threshold values
Aroma characteristics at 1.0%: sweet, nutty, roasted, toasted, grainy, coffee and corn with savory, meaty nuances.
Taste threshold values
Taste characteristics at 15 ppm: nut skin, brown, roasted, oily with a cocoa and coffee nuance, musty, nutty, and grainy
Allgemeine Beschreibung
5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine is the major flavor compound of palm sugar. It is also found in coffee and cooked meat.

6,7-Dihydro-5-methyl-5H-cyclopentapyrazin Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

23747-48-0, 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine Verwandte Suche:

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