Jump To Section:

Identification Taxonomy Ontology Physical properties Spectra Biological properties Concentrations Links References XML

Record Information

Version

5.0

Status

Expected but not Quantified

Creation Date

2012-09-11 21:59:04 UTC

Update Date

2023-02-21 17:25:28 UTC

HMDB ID

HMDB0036808

Secondary Accession Numbers

HMDB36808

Metabolite Identification

Common Name

2,5-Diethylpyrazine

Description

2,5-Diethylpyrazine belongs to the class of organic compounds known as pyrazines. Pyrazines are compounds containing a pyrazine ring, which is a six-member aromatic heterocycle, that consists of two nitrogen atoms (at positions 1 and 4) and four carbon atoms. 2,5-Diethylpyrazine has been detected, but not quantified in, a few different foods, such as arabica coffees (Coffea arabica), coffee and coffee products, and robusta coffees (Coffea canephora). This could make 2,5-diethylpyrazine a potential biomarker for the consumption of these foods. Based on a literature review very few articles have been published on 2,5-Diethylpyrazine.

Structure

MOL 3D MOL SDF 3D SDF PDB 3D PDB SMILES InChI

View in JSmol View NMR Assignments View Stereo Labels

Synonyms

Value	Source
2,5-Diethyl-pyrazine	HMDB

Chemical Formula

C₈H₁₂N₂

Average Molecular Weight

136.1943

Monoisotopic Molecular Weight

136.100048394

IUPAC Name

2,5-diethylpyrazine

Traditional Name

2,5-diethylpyrazine

CAS Registry Number

13238-84-1

SMILES

CCC1=CN=C(CC)C=N1

InChI Identifier

InChI=1S/C8H12N2/c1-3-7-5-10-8(4-2)6-9-7/h5-6H,3-4H2,1-2H3

InChI Key

WAVOLMBVDCRBGR-UHFFFAOYSA-N

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as pyrazines. Pyrazines are compounds containing a pyrazine ring, which is a six-member aromatic heterocycle, that consists of two nitrogen atoms (at positions 1 and 4) and four carbon atoms.

Kingdom

Organic compounds

Super Class

Organoheterocyclic compounds

Class

Diazines

Sub Class

Pyrazines

Direct Parent

Pyrazines

Alternative Parents

Substituents

Pyrazine
Heteroaromatic compound
Azacycle
Organic nitrogen compound
Organopnictogen compound
Hydrocarbon derivative
Organonitrogen compound
Aromatic heteromonocyclic compound

Molecular Framework

Aromatic heteromonocyclic compounds

External Descriptors

Not Available

Ontology

Physiological effect

Not Available

Disposition

Biological location

Cellular substructure

Extracellular (HMDB: HMDB0036808)
Cytoplasm (HMDB: HMDB0036808)

Route of exposure

Enteral

Ingestion (HMDB: HMDB0036808)

Source

Exogenous

Exogenous (HMDB: HMDB0036808)

Food

Food (HMDB: HMDB0036808)

Coffee and coffee product

Coffee

Arabica coffee (FooDB: FOOD00059)
Robusta coffee (FooDB: FOOD00060)

Coffee and coffee products (FooDB: FOOD00861)

Endogenous

Plant

Coffea (HMDB: HMDB0036808)

Process

Not Available

Role

Biological role

Nutrient (HMDB: HMDB0036808)

Physical Properties

State

Not Available

Experimental Molecular Properties

Property	Value	Reference
Melting Point	88.00 °C. @ 760.00 mm Hg	The Good Scents Company Information System
Boiling Point	187.00 to 189.00 °C. @ 760.00 mm Hg	The Good Scents Company Information System
Water Solubility	1645 mg/L @ 25 °C (est)	The Good Scents Company Information System
LogP	1.706 (est)	The Good Scents Company Information System

Experimental Chromatographic Properties

Not Available

Predicted Molecular Properties

Property	Value	Source
Water Solubility	34.9 g/L	ALOGPS
logP	1.61	ALOGPS
logP	1.2	ChemAxon
logS	-0.59	ALOGPS
pKa (Strongest Basic)	1.37	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	2	ChemAxon
Hydrogen Donor Count	0	ChemAxon
Polar Surface Area	25.78 Å²	ChemAxon
Rotatable Bond Count	2	ChemAxon
Refractivity	40.18 m³·mol⁻¹	ChemAxon
Polarizability	15.81 Å³	ChemAxon
Number of Rings	1	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	Yes	ChemAxon
MDDR-like Rule	No	ChemAxon

Predicted Chromatographic Properties

Predicted Collision Cross Sections

Predictor	Adduct Type	CCS Value (Å²)	Reference
DarkChem	[M+H]+	130.011	31661259
DarkChem	[M-H]-	128.888	31661259
DeepCCS	[M+H]+	129.238	30932474
DeepCCS	[M-H]-	125.651	30932474
DeepCCS	[M-2H]-	162.832	30932474
DeepCCS	[M+Na]+	137.933	30932474
AllCCS	[M+H]+	130.2	32859911
AllCCS	[M+H-H2O]+	125.6	32859911
AllCCS	[M+NH4]+	134.5	32859911
AllCCS	[M+Na]+	135.7	32859911
AllCCS	[M-H]-	132.6	32859911
AllCCS	[M+Na-2H]-	134.5	32859911
AllCCS	[M+HCOO]-	136.6	32859911

Predicted Retention Times

Underivatized

Chromatographic Method	Retention Time	Reference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022.	2.42 minutes	32390414
Predicted by Siyang on May 30, 2022	11.1832 minutes	33406817
Predicted by Siyang using ReTip algorithm on June 8, 2022	4.47 minutes	32390414
AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid	30.0 seconds	40023050
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid	1022.0 seconds	40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid	371.4 seconds	40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid	136.8 seconds	40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid	221.9 seconds	40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid	58.2 seconds	40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid	326.1 seconds	40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid	355.3 seconds	40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)	54.3 seconds	40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid	856.2 seconds	40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid	76.4 seconds	40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid	1078.9 seconds	40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid	266.0 seconds	40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid	211.3 seconds	40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate	356.6 seconds	40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA	350.8 seconds	40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water	48.5 seconds	40023050

Predicted Kovats Retention Indices

Underivatized

Metabolite	SMILES	Kovats RI Value	Column Type	Reference
2,5-Diethylpyrazine	CCC1=CN=C(CC)C=N1	1451.1	Standard polar	33892256
2,5-Diethylpyrazine	CCC1=CN=C(CC)C=N1	1042.6	Standard non polar	33892256
2,5-Diethylpyrazine	CCC1=CN=C(CC)C=N1	1084.5	Semi standard non polar	33892256

Spectra

GC-MS Spectra

Spectrum Type	Description	Splash Key	Deposition Date	Source	View
Predicted GC-MS	Predicted GC-MS Spectrum - 2,5-Diethylpyrazine GC-MS (Non-derivatized) - 70eV, Positive	splash10-000i-5900000000-b101bc0ff7357fe2bfa3	2017-09-01	Wishart Lab	View Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - 2,5-Diethylpyrazine GC-MS (Non-derivatized) - 70eV, Positive	Not Available	2021-10-12	Wishart Lab	View Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - 2,5-Diethylpyrazine GC-MS (Non-derivatized) - 70eV, Positive	Not Available	2021-10-12	Wishart Lab	View Spectrum

MS/MS Spectra

Spectrum Type	Description	Splash Key	Deposition Date	Source	View
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 10V, Positive-QTOF	splash10-000i-0900000000-634b57f785448ae1dee9	2015-04-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 20V, Positive-QTOF	splash10-000i-1900000000-2b20f6d0a916766e1dc9	2015-04-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 40V, Positive-QTOF	splash10-0zfr-9100000000-b971f8822bc4d82c9a92	2015-04-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 10V, Negative-QTOF	splash10-000i-0900000000-e263f8b2266d5f3a120d	2015-04-25	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 20V, Negative-QTOF	splash10-000i-0900000000-53433487cedcd45d69c1	2015-04-25	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 40V, Negative-QTOF	splash10-0ldi-9400000000-37ebd251610c8978c986	2015-04-25	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 10V, Positive-QTOF	splash10-000i-0900000000-db39345445e15196785f	2021-09-23	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 20V, Positive-QTOF	splash10-000i-6900000000-4c76e883b89db11b5176	2021-09-23	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 40V, Positive-QTOF	splash10-0pvl-9000000000-cc3d37a7f8d2d3a2e8ee	2021-09-23	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 10V, Negative-QTOF	splash10-000i-0900000000-560d709635c029cd0cba	2021-09-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 20V, Negative-QTOF	splash10-000i-2900000000-48026b957059c1ded2b8	2021-09-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2,5-Diethylpyrazine 40V, Negative-QTOF	splash10-0i2c-9300000000-27f961d8b7a399f575de	2021-09-24	Wishart Lab	View Spectrum

NMR Spectra

Spectrum Type	Description	Deposition Date	Source	View
Predicted 1D NMR	¹³C NMR Spectrum (1D, 100 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 100 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 1000 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 1000 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 200 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 200 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 300 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 300 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 400 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 400 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 500 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 500 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 600 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 600 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 700 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 700 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 800 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 800 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 900 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 900 MHz, D₂O, predicted)	2021-09-25	Wishart Lab	View Spectrum

IR Spectra

Spectrum Type	Description	Deposition Date	Source	View
Predicted IR Spectrum	IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+)	2023-02-04	FELIX lab	View Spectrum
Predicted IR Spectrum	IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+)	2023-02-04	FELIX lab	View Spectrum

Biological Properties

Cellular Locations

Cytoplasm
Extracellular

Biospecimen Locations

Not Available

Tissue Locations

Not Available

Pathways

Not Available

Name	SMPDB/PathBank	KEGG

Normal Concentrations

Not Available

Abnormal Concentrations

Not Available

Associated Disorders and Diseases

Disease References

None

Associated OMIM IDs

None

External Links

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FooDB ID

FDB015754

KNApSAcK ID

Not Available

Chemspider ID

24033

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

25797

PDB ID

Not Available

ChEBI ID

Not Available

Food Biomarker Ontology

Not Available

VMH ID

Not Available

MarkerDB ID

Not Available

Good Scents ID

rw1464211

References

Synthesis Reference

Not Available

Material Safety Data Sheet (MSDS)

Not Available

General References

(). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. .

Showing metabocard for 2,5-Diethylpyrazine (HMDB0036808)

MOL for HMDB0036808 (2,5-Diethylpyrazine)

3D MOL for HMDB0036808 (2,5-Diethylpyrazine)

3D SDF for HMDB0036808 (2,5-Diethylpyrazine)

3D-SDF for HMDB0036808 (2,5-Diethylpyrazine)

PDB for HMDB0036808 (2,5-Diethylpyrazine)

3D PDB for HMDB0036808 (2,5-Diethylpyrazine)

SMILES for HMDB0036808 (2,5-Diethylpyrazine)

INCHI for HMDB0036808 (2,5-Diethylpyrazine)

Structure for HMDB0036808 (2,5-Diethylpyrazine)

3D Structure for HMDB0036808 (2,5-Diethylpyrazine)

Predicted Collision Cross Sections

Predicted Retention Times

Underivatized

Predicted Kovats Retention Indices

Underivatized

GC-MS Spectra

MS/MS Spectra

NMR Spectra

IR Spectra