2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one

2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one Suppliers list

Company Name:	Capot Chemical Co.,Ltd.
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Products Intro:	Product Name:2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one CAS:20348-09-8 Purity:NLT 98% Package:1G;1KG;100KG

Company Name:	ATK CHEMICAL COMPANY LIMITED
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Products Intro:	Product Name:4H-Pyrido[3,2-b][1,4]oxazin-3-one CAS:20348-09-8 Package:5MG;10MG;50MG;100MG,1G,5G

Company Name:	Accela ChemBio Inc.
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Products Intro:	Product Name:2H-Pyrido[3,2-b]-1,4-oxazin-3(4H)-one CAS:20348-09-8 Purity:>97% Package:1g;5g;10g;25g

Company Name:	Alchem Pharmtech,Inc.
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Products Intro:	Product Name:2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one CAS:20348-09-8 Purity:97+% Package:1g;10g;100g;;1kg Remarks:Z-56455

Company Name:	CONIER CHEM AND PHARMA LIMITED
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Products Intro:	Product Name:2h-pyrido(3,2-b)(1,4)oxazin-3(4h)-one CAS:20348-09-8 Purity:0.99 Package:1kg

2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one manufacturers

2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one Basic information

Product Name:	2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one
Synonyms:	LABOTEST-BB LT00451615;2H-PYRIDO[3,2-B]-1,4-OXAZIN-3(4H)-ONE;TIMTEC-BB SBB006815;2H-PYRIDO(3,2-B)-1,4-OXAZIN-3(4H)-ONE 95 %;4H-Pyrido[3,2-b][1,4]oxazin-3-one;3,4-Dihydro-2H-pyrido[3,2-b]-1,4-oxazine-3-one;2,3-dihydro-3-oxo-4H-pyrido[3,2-b]-1,4-oxazine;4H-pyrido[2,3-e][1,4]oxazin-3-one
CAS:	20348-09-8
MF:	C7H6N2O2
MW:	150.13
EINECS:	243-751-1
Product Categories:	C7 and C8;Heterocyclic Building Blocks;Pyridines;Heterocyclic Compounds;Pyridines, Pyrimidines, Purines and Pteredines
Mol File:	20348-09-8.mol

2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one Chemical Properties

Melting point	204-206 °C(lit.)
Boiling point	384.2±37.0 °C(Predicted)
density	1.327±0.06 g/cm3(Predicted)
storage temp.	Sealed in dry,Room Temperature
form	liquid
pka	11.06±0.20(Predicted)
Appearance	Off-white to light brown Solid
BRN	1074010
InChI	1S/C7H6N2O2/c10-6-4-11-5-2-1-3-8-7(5)9-6/h1-3H,4H2,(H,8,9,10)
InChIKey	ANHQLUBMNSSPBV-UHFFFAOYSA-N
SMILES	O=C1COc2cccnc2N1
CAS DataBase Reference	20348-09-8(CAS DataBase Reference)

Safety Information

MSDS Information

Provider	Language
SigmaAldrich	English
ALFA	English

2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one Usage And Synthesis

Uses	2H-Pyrido[3,2-b]-1,4-oxazin-3(4H)-one was used in the synthesis of quinazolinbenzoxazine derivatives.
Synthesis	16867-03-1 79-04-9 20348-09-8 A reaction mixture was prepared by mixing a solution of 2-amino-3-hydroxypyridine (45 mmol) and sodium bicarbonate (51 mmol) in water (30 mL) with 2-butanone (30 mL). A solution of 2-butanone (10 mL) with chloroacetyl chloride (51 mmol) was slowly added dropwise under ice-bath cooling conditions, and the rate of dropwise acceleration was controlled to keep the reaction temperature from exceeding 10°C. The reaction was carried out at room temperature. After dropwise addition, stirring was continued at room temperature for 30 min, and then the reaction was warmed up to 75°C for 1 hr. Upon completion of the reaction, the reaction solution was concentrated and purified by recrystallization (methanol/water=1:1) to afford 4.3 g of the target product 2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one.
References	[1] Bioorganic and Medicinal Chemistry, 1998, vol. 6, # 2, p. 133 - 142 [2] Helvetica Chimica Acta, 1976, vol. 59, p. 1593 - 1612 [3] Patent: CN103130792, 2016, B. Location in patent: Paragraph 0605-0607

2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one Preparation Products And Raw materials

Raw materials	Acetonitrile, 2-[(2-nitro-3-pyridinyl)oxy]--->6-BROMO-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE-->3-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carbaldehyde-->2-Amino-3-hydroxypyridine-->tert-Butyl bromoacetate-->carbon monoxide-->3-Hydroxy-2-nitropyridine-->Ethyl bromoacetate-->Chloroacetyl chloride-->Chloroacetic acid
Preparation Products	8-chloro-4H-pyrido[3,2-b][1,4]oxazin-3-one

Tag:2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one(20348-09-8) Related Product Information

Metribuzin Buprofezin Copper Pyrithione Zinc pyrithione Piroctone olamine 7-CHLORO-2H-PYRIDO[3,2-B]-1,4-OXAZIN-3(4H)ONE 2-(2-HYDROXYETHYL)-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one 2-(3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZIN-2-YL)ETHYL 4-CHLOROBENZENECARBOXYLATE BUTTPARK 26\07-94 2-[2-(4-ETHYLPIPERAZINO)ETHYL]-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE 2-(3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZIN-2-YL)ETHYL 2-FUROATE 2-[2-(4-BENZYLPIPERAZINO)ETHYL]-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE BUTTPARK 26\07-97 2-(2-MORPHOLINOETHYL)-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE 2-(3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZIN-2-YL)ETHYL 4-FLUOROBENZENECARBOXYLATE BUTTPARK 26\07-100 BUTTPARK 26\07-91

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