ChemicalBook > CAS DataBase List > 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine

6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine

Product Name
6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
CAS No.
23747-48-0
Chemical Name
6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
Synonyms
FEMA 3306;nutty pyrazine;FEMA NUMBER 3306;5-METHYL-6,7-DIHYDROC;MAPLE LACTONE PYRAZINE;LABOTEST-BB LT00441061;METHYL DIHYDROCYCLOPENTAPYRAZINE;5-Methyl-5H-cyclopenta[b]pyrazine;5-METHYL-2,3-CYCLOPENTENOPYRAZINE;5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE
CBNumber
CB3348743
Molecular Formula
C8H10N2
Formula Weight
134.18
MOL File
23747-48-0.mol
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6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine Property

Melting point:
121-123 °C
Boiling point:
96-99 °C20 mm Hg(lit.)
Density 
1.055 g/mL at 25 °C(lit.)
FEMA 
3306 | 5H-5-METHYL-6,7-DIHYDROCYCLOPENTA(B)PYRAZINE
refractive index 
n20/D 1.527(lit.)
Flash point:
174 °F
storage temp. 
Inert atmosphere,Room Temperature
form 
clear liquid
pka
1.85±0.40(Predicted)
color 
Colorless to Light yellow to Light orange
Odor
nutty, roasted odor
Odor Type
earthy
Water Solubility 
insoluble
JECFA Number
781
InChIKey
YZEFQPIMXZVPKP-UHFFFAOYSA-N
LogP
1.33
NIST Chemistry Reference
5H-5-methyl-6,7-dihydrocyclopentapyrazine(23747-48-0)
EPA Substance Registry System
5H-Cyclopentapyrazine, 6,7-dihydro-5-methyl- (23747-48-0)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36/37/39
WGK Germany 
3
TSCA 
Yes
HS Code 
29339900
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W330604
Product name
5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine
Purity
≥97%, FG
Packaging
sample-k
Price
$54.6
Updated
2024/03/01
Sigma-Aldrich
Product number
W330604
Product name
5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine
Purity
≥97%, FG
Packaging
100g
Price
$312
Updated
2024/03/01
Sigma-Aldrich
Product number
W330604
Product name
5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine
Purity
≥97%, FG
Packaging
1kg
Price
$2020
Updated
2024/03/01
Sigma-Aldrich
Product number
W330604
Product name
5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine
Purity
≥97%, FG
Packaging
25g
Price
$138
Updated
2023/01/07
TCI Chemical
Product number
M1086
Product name
5H-5-Methyl-6,7-dihydrocyclopentapyrazine
Purity
>97.0%(GC)(T)
Packaging
5mL
Price
$88
Updated
2024/03/01
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6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine Chemical Properties,Usage,Production

Description

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.

Chemical Properties

5H-5-Methyl-6,7-dihydrocyclopenta(b)pyrazine has an earthy, peanut, roasted odor

Chemical Properties

clear yellow to yellow-orange to brown liquid

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

Uses

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.

Preparation

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

General Description

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-5(H)-cyclopentapyrazine Preparation Products And Raw materials

Raw materials

Preparation Products

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6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine Suppliers

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View Lastest Price from 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine manufacturers

Henan Fengda Chemical Co., Ltd
Product
6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine 23747-48-0
Price
US $34.00-1.10/kg
Min. Order
1kg
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2024-04-25
Hebei Guanlang Biotechnology Co,.LTD
Product
6, 7-Dihydro-5-Methyl-5 (H) -Cyclopentapyrazine 23747-48-0
Price
US $5.00-2.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10000kg
Release date
2023-03-22
Henan Aochuang Chemical Co.,Ltd.
Product
6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine 23747-48-0
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
1Ton
Release date
2022-09-20

23747-48-0, 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazineRelated Search:

METSULFURON METHYL Kresoxim-methyl Sulfachoropyrazine sodium Tetramethylpyrazine Glipizide Pyrazine Bensulfuron methyl Methylparaben Thiophanate-methyl Methyl acetate Methyl acrylate Pyrazinamide Methyl Methyl bromide Parathion-methyl 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine TOSLAB 800869 AKOS BBS-00001901

  • 5-METHYL-6,7-DIHYDROC
  • 5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE
  • 6,7-DIHYDRO-5-METHYL-5H-CYCLOPENTAPYRAZINE
  • 5H-5-METHYL-6,7-DIHYDROCYCLOPENTA[B]PYRAZINE
  • 5H-5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE
  • 5H-Cyclopentapyrazine, 6,7-dihydro-5-methyl-
  • 5-methyl-(5H)-6,7-dihydrocyclo- pentapyrazine
  • 5-Methyl-5H-cyclopenta[b]pyrazine
  • 5-Methyl-6,7-dihydro-(5H)-cyclopentapyrazine
  • 6,7-dihydro-5-methyl-5h-cyclopentapyrazin
  • 5H-5-METHYL-6 7-DIHYDROCYCLOPENTA(B)- &
  • dihydromethylcyclopentapyrazine,6,7-dihydro-5-methyl-5H-cyclopentapyrazine
  • 5-METHYL-6,7-DIHYDROCYCLOPENTA(B)PYRAZINE
  • 6,7-Dihydro-5-methyl-5h-cyclopenta 1,4-diazine
  • 6,7-Dihydro-5-methyl-5H-cyclopenta[b]pyrazine
  • 6,7-Dihydro-5-methylcyclopentapyrazine, 98%
  • (5S)-5-methyl-2,5,6,7-tetrahydro-1H-cyclopenta[b]pyrazin-1-ium
  • 5H-5-Methyl-6,7-dihydrocylope ntapyrazine
  • 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine,98%
  • METHYL DIHYDROCYCLOPENTAPYRAZINE
  • MAPLE LACTONE PYRAZINE
  • FEMA 3306
  • FEMA NUMBER 3306
  • LABOTEST-BB LT00441061
  • 5-METHYL-2,3-CYCLOPENTENOPYRAZINE
  • 5-METHYL-6,7-DIHYDRO-5(H)-CYCLOPENTA(B)PYRAZINE
  • 5H-5-Methyl-6,7-dihydrocyclopentapyrazine&gt
  • 5-methyl-5H,6H,7H-cyclopenta[b]pyrazine
  • 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine ISO 9001：2015 REACH
  • nutty pyrazine
  • 23747-48-0
  • C8H10N2C8H10N2C8H10N2
  • Alphabetical Listings
  • Flavors and Fragrances
  • M-N