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
- Molecular Weight:
- 134.18
- MDL Number:
- MFCD00040997
- MOL File:
- 23747-48-0.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | W330604 | 1 each | $56.2 |
| 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | W330604 | 100g | $331 |
| 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | W330604 | 1kg | $2130 |
| 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | W330604 | 1 unit | $48.87 |
| 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | W330604 | 1 unit | $48.87 |
| More product size | |||
| 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 |
n |
| FLAVIS Number | 14.037 | 6,7-Dihydro-5-methyl-5H-cyclopentapyrazine |
| Flash point | 174 °F |
| storage temp. | Inert atmosphere,Room Temperature |
| pka | 1.85±0.40(Predicted) |
| form | clear liquid |
| color | Colorless to Light yellow to Light orange |
| Odor | nutty, roasted odor |
| Odor Type | earthy |
| biological source | synthetic |
| Water Solubility | insoluble |
| JECFA Number | 781 |
| Major Application | flavors and fragrances |
| InChI | 1S/C8H10N2/c1-6-2-3-7-8(6)10-5-4-9-7/h4-6H,2-3H2,1H3 |
| InChIKey | YZEFQPIMXZVPKP-UHFFFAOYSA-N |
| SMILES | CC1CCc2nccnc12 |
| LogP | 1.33 |
| Substances Added to Food (formerly EAFUS) | 5H-5-METHYL-6,7-DIHYDROCYCLOPENTA(B)PYRAZINE |
| EWG's Food Scores | 1 |
| FDA UNII | L5IDR3PHAV |
| 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) |
| UNSPSC Code | 12164502 |
| NACRES | NA.21 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | Eyeshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36/37/39 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29339900 | |||||||||
| Storage Class | 10 - Combustible liquids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
|||||||||
| NFPA 704 |
|
6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine price More Price(31)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | W330604 | 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | 23747-48-0 | 1 each | $56.2 | 2026-04-30 | Buy |
| Sigma-Aldrich | W330604 | 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | 23747-48-0 | 100g | $331 | 2026-04-30 | Buy |
| Sigma-Aldrich | W330604 | 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | 23747-48-0 | 1kg | $2130 | 2026-04-30 | Buy |
| Sigma-Aldrich | W330604 | 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | 23747-48-0 | 1 unit | $48.87 | 2025-07-31 | Buy |
| Sigma-Aldrich | W330604 | 5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine ≥97%, FG | 23747-48-0 | 1 unit | $48.87 | 2025-07-31 | Buy |
6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine Chemical Properties,Uses,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
clear yellow to yellow-orange to brown liquid
Chemical Properties
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
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
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 +8613131129325 | sales1@chuanghaibio.com | China | 5235 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20124 | 58 |
| JINING XINHE CHEMICAL CO., LTD | +8615318402391 | sales@xinhepharma.com | China | 809 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29819 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-86-5926051114 +8615060885618 | sales@amoychem.com | China | 6369 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49977 | 58 |
| SIMAGCHEM CORP | +86-5922680277 +86-13806087780 | sale@simagchem.com | China | 17346 | 58 |
| Hebei Binshare New Material Co. Ltd | +8618633865755 | china01@hbbinshare.com | CHINA | 955 | 58 |
| Jinan Qinmu Fine Chemical Co.,Ltd. | +8618660799346 | sales@qinmuchem.com | China | 1008 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
View Lastest Price from 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-12-01 | 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
23747-48-0
|
US $0.00-0.00 / KG | 1KG | 98.0% | 10000KGS | Shaanxi Dideu New Materials Co. Ltd | |
 |
2025-11-18 | 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
23747-48-0
|
US $1.10 / g | 1g | 99.00% | 100 Tons | Dideu Industries Group Limited | |
 |
2025-09-25 | 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
23747-48-0
|
US $34.00-1.10 / kg | 1kg | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd |
-
- 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
23747-48-0
- US $0.00-0.00 / KG
- 98.0%
- Shaanxi Dideu New Materials Co. Ltd
-
- 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
23747-48-0
- US $1.10 / g
- 99.00%
- Dideu Industries Group Limited
-
- 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
23747-48-0
- US $34.00-1.10 / kg
- 99%
- Henan Fengda Chemical Co., Ltd
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