2-Hydroxy-6-methylpyrazine

Base Information

• Chemical Name: 2-Hydroxy-6-methylpyrazine
• CAS No.: 20721-18-0
• Molecular Formula: C₅H₆N₂O
• Molecular Weight: 110.115
• Hs Code.: 2933990090
• NSC Number: 143141
• DSSTox Substance ID: DTXSID00301408
• Wikidata: Q72485621
• Mol file: 20721-18-0.mol

Synonyms:2-Hydroxy-6-methylpyrazine;6-methylpyrazin-2-ol;20721-18-0;6-methyl-1H-pyrazin-2-one;6-Methylpyrazin-2-one;2(1H)-Pyrazinone, 6-methyl-;MFCD08705761;6-methylpyrazin-2-ol 2-Hydroxy-6-methylpyrazine;NSC143141;SCHEMBL2629277;DTXSID00301408;AKOS006290027;AKOS025310541;AM84719;CS-W003559;NSC 143141;NSC-143141;SB74936;AS-18750;SY004473;FT-0650121;4-(2-Methoxy-phenyl)-2,4-dioxo-butyricacid;EN300-104726;A814834;W-206548

Chemical Property of 2-Hydroxy-6-methylpyrazine

Chemical Property:

• Vapor Pressure: 1.68mmHg at 25°C
• Melting Point: 249-250 °C
• Refractive Index: 1.53
• Boiling Point: 376.195 °C at 760 mmHg
• PKA: 11.75±0.40(Predicted)
• Flash Point: 181.316 °C
• PSA: 46.01000
• Density: 1.22 g/cm³
• LogP: 0.49060
• Storage Temp.: Inert atmosphere,Room Temperature
• XLogP3: -0.3
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 110.048012819
• Heavy Atom Count: 8
• Complexity: 169

Purity/Quality:

99% ^*data from raw suppliers

2-Hydroxy-6-methylpyrazine ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CC1=CN=CC(=O)N1
• Uses: 2-Hydroxy-6-methylpyrazine is a useful synthetic intermediate in the synthesis of 2-hydroxy-3-phenyl-6-methylpyrazine; a fluorescent degradation product of the antibiotic cephalexin used to determine this antibiotic in aqueous solution and human plasma.

Technology Process of 2-Hydroxy-6-methylpyrazine

There total 5 articles about 2-Hydroxy-6-methylpyrazine which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

glycinamide hydrochloride (1668-10-6) + 2-oxopropanal (78-98-8) → 2-hydroxy-6-methylpyrazine (20721-18-0) + 2-hydroxy-5-methylpyrazine (20721-17-9)

Guidance literature:

With sodium hydroxide; In methanol; water; at -30 - 20 ℃; for 3.5h;

DOI:10.1016/j.ejmech.2017.12.018

Reference yield:

7-methyl-1H-pteridine-2,4-dione (13401-38-2) → 6-methylpyrazin-2-one (20721-18-0)

Guidance literature:

With sodium hydroxide; at 180 - 190 ℃; Erhitzen des Reaktionsprodukts mit wss. H₂SO₄;

DOI:10.1021/jo01085a016

Reference yield:

glycinamide hydrochloride (1668-10-6) + 2-oxopropanal (78-98-8) → 6-methylpyrazin-2-one (20721-18-0) + 5-methyl-2(1H)-pyrazinone (20721-17-9)

Guidance literature:

With methanol;

DOI:10.1021/ja01126a070

upstream raw materials:

5-methyl-3-oxo-3,4-dihydro-pyrazine-2-carboxylic acid

7-methyl-1H-pteridine-2,4-dione

glycinamide hydrochloride

2-oxopropanal

Downstream raw materials:

6-methyl-3-phenyl-2(1H)-pyrazinone

6-methyl-3,5-diphenyl-1H-pyrazin-2-one

6-methylpyrazin-2-amine

Refernces