Pyrazine, 2-methylPyrazine (2M), 2,6-dimethylPyrazine (26DM), 2,3-dimethylPyrazine (23DM), 2-ethyl-3-methylPyrazine (2E3M), 2,3,5-trimethylPyrazine (235TM), 2,3-diethylPyrazine (23DE), 5-ethyl-2,3-dimethylPyrazine (5E23DM), 2,3,5,6-tetramethylPyrazine (2356TTM), 2-isobutyl-3-methylPyrazine (2I3M), 2,3-diethyl-5-methylPyrazine (23DE5M), 2-acetyl-3-methylPyrazine (2A3M), (3,5,6-trimethylpyrazin-2-yl)methanol (TM2YM) and 2-propylPyrazine were purchased from company Sigma-Aldrich (Shanghai, China). Meanwhile, 2-ethyl-6-methylPyrazine (2E6M), 2,6-diethylPyrazine (26DE) and 2-ethyl-3,5-dimethylPyrazine (2E35DM) were purchased from J&K Chemical Corp (Beijing, China). The above commercial standards (≥96% purity) were used. HPLC grade ethanol and LC–MS grade acetonitrile were purchased from Merck (Darmstadt, Germany). Ultra-pure water was obtained from a Milli-Q Gradient A10 system (Millipore, Billerica, MA, USA).
2 3 5 trimethylpyrazine
Manufactured by Merck Group
Sourced in China, United States
2,3,5-trimethylpyrazine is a heterocyclic organic compound with the molecular formula C₇H₁₀N₂. It is a colorless solid with a nutty, roasted, and earthy aroma. The compound is commonly used as a flavor and fragrance additive in various industries.
Automatically generated - may contain errors
Lab products found in correlation
2 3 5 6 tetramethylpyrazine, by Merck Group (2 mentions)
Pyrazine, by Merck Group (1 mentions)
2 ethyl 3 methylpyrazine, by Merck Group (1 mentions)
Hplc grade ethanol, by Merck Group (1 mentions)
2 methylpyrazine, by Merck Group (1 mentions)
2 6 dimethylpyrazine, by Merck Group (1 mentions)
2 3 dimethylpyrazine, by Merck Group (1 mentions)
2 3 diethyl 5 methylpyrazine, by Merck Group (1 mentions)
Milli q gradient a10 system, by Merck Group (1 mentions)
Lc ms grade acetonitrile, by Merck Group (1 mentions)
Potato dextrose broth pdb, by BD (1 mentions)
Menthone, by Merck Group (1 mentions)
Piperonal, by Merck Group (1 mentions)
Myosmine, by Merck Group (1 mentions)
6 methylcoumarin, by Merck Group (1 mentions)
Cotinine, by Merck Group (1 mentions)
2 methylbutanal, by Merck Group (1 mentions)
Toluene, by Merck Group (1 mentions)
3 methylbutanal, by Merck Group (1 mentions)
Methyleugenol, by Merck Group (1 mentions)
6 protocols using 2 3 5 trimethylpyrazine
1
Characterization of Pyrazine Derivatives
2
Volatile Compound Identification in Potatoes
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Potato dextrose broth (PDB) was obtained from Becton Dickinson (Dickinson and Company, Sparks, MD, USA). Phenylalanine was purchased from Samchun Chemicals (Pyeongtaek-si, Gyeonggi-do, Korea). The 2,3,5-trimethyl pyrazine was purchased from Sigma-Aldrich (St. Louis, MO, USA). Methanol was obtained from J.T.Baker (Phillipsburg, NJ, USA). Authentic standard compounds for positive identification of volatile compounds were purchased as follows: N,N-dibutylformamide, 2-phenylpropan-1-ol, pentadecan-2-one, propan-2-yl hexadecanoate, 3,4-dimethylphenyl methanol, hexadecan-1-ol, and 3-phenylfuran-2,5-dione were purchased from Alfa Aesar (Haverhill, MA, USA); methyl 2-(3-oxo-2-pentylcyclopentyl)acetate, 3-methyl-2H-furan-5-one, and 6-methylheptan-2-one were obtained from SejinCI (Seoul, Korea), while all of the other authentic standards were purchased from Sigma-Aldrich (St. Louis, MO, USA).
3
Compound Purchasing and Preparation
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The following compounds were purchased from Sigma-Aldrich (St. Louis, MO): piperonal (99.0%), 2,3,5-trimethylpyrazine (99.0%), menthone (99.0%), (E)-beta-damascone (99.0%), cinnamic acid methyl ester (99.0%), myosmine (99.0%), cotinine (98.5%), and the internal standard (ISTD) 6-methyl coumarin (99.0%). Hydroxyacetone (96.0%) was purchased from Santacruz Biotechnology (Dallas, TX). 200 proof ethanol was purchased from Pharmco-Aaper. Propylene glycol (PG) and vegetable glycerol (VG) were purchased from Spectrum (New Brunswick, NJ).
4
Coffee Capsule Aroma Profile Analysis
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Capsules from sixty-five different types of coffee capsules belonging to five different brands (named A to E), together with their relative coffee machines, were purchased on local markets in Parma (Italy) or through online stores during 2016 (23 capsules from brand A; 15 capsules, brand B; 10 capsules, brand C; 10 capsules, brand D; and 7 capsules, brand E). Details on the type of coffee are fully described in reference [7 (link)].
Toluene, 2-methylbutanal, 3-methylbutanal, 2,3,5-trimethylpyrazine, and 1H-pyrrole-2-carbaldehyde were purchased from Sigma-Aldrich (St. Louis, MO, USA).
Toluene, 2-methylbutanal, 3-methylbutanal, 2,3,5-trimethylpyrazine, and 1H-pyrrole-2-carbaldehyde were purchased from Sigma-Aldrich (St. Louis, MO, USA).
5
Flavor Compounds Analytical Protocol
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The flavor standards, methanethiol (97 %), eucalyptol (99 %), 2,5-dimethyltetrahydrofuran (98 %), 2,5-dimethylpyrazine (98 %), hexanal (98 %), 2-ethyl-5-methylpyrazine (96 %), (E)-2-octenal (97 %), 3-ethyl-2,5-dimethylpyrazine (98 %), benzaldehyde (99.5 %), (Z)-2-octen-1-ol (97 %), 2-pentylfuran (98 %), carvone (96 %), methyleugenol (98 %), anethole (99 %), (E, E)-2,4-decadienal (97 %), 2,3,5-trimethylpyrazine (99 %), (Z)-3-phenylacrylaldehyde (97 %), p-cresol (99 %), 4-hydroxy-5-methyl-3(2H)-furanone (97 %), 2,3-dimethyl-5-ethylpyrazine (99 %), dimethyl trisulfide (98 %), 2(5H)-furanone (98 %), 1-octen-3-ol (98 %), 3-furaldehyde (97 %), and 2-furanmethanol (98 %) were commercially purchased from Sigma-Aldrich (Shanghai, China). And methyl pyrazine (98 %) and benzene acetaldehyde (98 %) were purchased from TCI (Shanghai, China). Meanwhile, 2-methyl-3-heptanone (99 %) from Dr. Ehrenstorfer (Beijing, China) as the internal standard and the n-alkanes external standard (C7-C40, ≥ 97 %) from o2si Smart Solutions (Shanghai, China) were purchased.
6
Analytical Reagents for Organic Synthesis
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Petroleum ether (40-60°C; 95%) was purchased from Acros Organics (Geel, Belgium). 2,3-Hexanedione (94%) and 2,4,5-trimethyl oxazole (97%) were obtained from Alfa Aesar (Karlsruhe, Germany).
Benzaldehyde (99%) and hydrogen peroxide (30%) were obtained from AppliChem (Darmstadt, Germany). Acetic acid (100%), chloroform-d (99.8 atom% D, with 0.03 vol% TMS, stabilized with Ag), diethyl ether (99.5%), iron(II) sulphate heptahydrate (99.5%), sodium carbonate decahydrate (98%), sodium sulphate (p.a.) and sulfuric acid (96%) were purchased from Carl Roth (Karlsruhe, Germany). Pentanal (97%) was obtained from Fisher Scientific (Darmstadt, Germany), Silica gel 60 was purchased from Macherey-Nagel (Düren, Germany) and 2,3-butanedione (97%) from Merck (Darmstadt, Germany). Acetoin (96%), 2,3-pentanedione (97%), 2,3,5,6-tetramethylpyrazine (98%) and 2,3,5-trimethylpyrazine (99%) were purchased from Sigma-Aldrich (Taufkirchen, Germany). 5-Ethyl-2,3-dimethylpyrazine (98%) was obtained from TCI (Eschborn, Germany). Butanal (97%) and propanal (97%) were purchased from Th. Geyer (Renningen, Germany) and ethyl acetate (98%) from VWR (Darmstadt, Germany). Helium (5.0) was obtained from Praxair (Düsseldorf, Germany) and nitrogen (5.0) from Air Liquide (Düsseldorf, Germany). All numbers given in parentheses represent the minimum purity.
Benzaldehyde (99%) and hydrogen peroxide (30%) were obtained from AppliChem (Darmstadt, Germany). Acetic acid (100%), chloroform-d (99.8 atom% D, with 0.03 vol% TMS, stabilized with Ag), diethyl ether (99.5%), iron(II) sulphate heptahydrate (99.5%), sodium carbonate decahydrate (98%), sodium sulphate (p.a.) and sulfuric acid (96%) were purchased from Carl Roth (Karlsruhe, Germany). Pentanal (97%) was obtained from Fisher Scientific (Darmstadt, Germany), Silica gel 60 was purchased from Macherey-Nagel (Düren, Germany) and 2,3-butanedione (97%) from Merck (Darmstadt, Germany). Acetoin (96%), 2,3-pentanedione (97%), 2,3,5,6-tetramethylpyrazine (98%) and 2,3,5-trimethylpyrazine (99%) were purchased from Sigma-Aldrich (Taufkirchen, Germany). 5-Ethyl-2,3-dimethylpyrazine (98%) was obtained from TCI (Eschborn, Germany). Butanal (97%) and propanal (97%) were purchased from Th. Geyer (Renningen, Germany) and ethyl acetate (98%) from VWR (Darmstadt, Germany). Helium (5.0) was obtained from Praxair (Düsseldorf, Germany) and nitrogen (5.0) from Air Liquide (Düsseldorf, Germany). All numbers given in parentheses represent the minimum purity.
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!