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

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one structure

CAS No.: 20348-21-4

Chemical Name:: 2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one

Synonyms: Einecs 243-753-2;2,2-Dimethyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H);2,2-dimethyl-4H-pyrido[2,3-e][1,4]oxazin-3-one;2,2-dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one;2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one;2,2-DIMETHYL-2H-PYRIDO(3,2-B)(1,4)OXAZINE-3(4H)-ONE;2H-Pyrido[3,2-b]-1,4-oxazin-3(4H)-one, 2,2-diMethyl-;2,2-diMethyl-2H,3H,4H-pyrido[3,2-b][1,4]oxazin-3-one

CBNumber:: CB5909443

Molecular Formula:: C9H10N2O2

Molecular Weight:: 178.19

MDL Number:: MFCD10000810

MOL File:: 20348-21-4.mol

MSDS File:: SDS

Last updated:2026-05-28 02:23:05

Product description	Number	Pack Size	Price
2,2-Dimethyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one AldrichCPR	PHB00083	1G	$201
2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	OR49043	1g	$21
2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	OR49043	5g	$24
2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	OR49043	25g	$62
2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	OR49043	100g	$228
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2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one Properties

Boiling point	352.5±37.0 °C(Predicted)
Density	1.176±0.06 g/cm3 (20 ºC 760 Torr)
storage temp.	Store at room temperature
pka	11.13±0.40(Predicted)
form	solid
Appearance	White to off-white Solid
InChI	InChI=1S/C9H10N2O2/c1-9(2)8(12)11-7-6(13-9)4-3-5-10-7/h3-5H,1-2H3,(H,10,11,12)
InChIKey	DMLNXUUGRSBBBR-UHFFFAOYSA-N
SMILES	O1C(C)(C)C(=O)NC2=NC=CC=C12
UNSPSC Code	12352200

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H302
Precautionary statements	P301+P312+P330
HS Code	2934999090
Storage Class	11 - Combustible Solids
Hazard Classifications	Acute Tox. 4 Oral
REACH Registrations	Active

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one price More Price(47)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	PHB00083	2,2-Dimethyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one AldrichCPR	20348-21-4	1G	$201	2023-06-20	Buy
Apolloscientific	OR49043	2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	20348-21-4	1g	$21	2026-06-04	Buy
Apolloscientific	OR49043	2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	20348-21-4	5g	$24	2026-06-04	Buy
Apolloscientific	OR49043	2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	20348-21-4	25g	$62	2026-06-04	Buy
Apolloscientific	OR49043	2,2-Dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 98%	20348-21-4	100g	$228	2026-06-04	Buy

Product number	Packaging	Price	Buy
PHB00083	1G	$201	Buy
OR49043	1g	$21	Buy
OR49043	5g	$24	Buy
OR49043	25g	$62	Buy
OR49043	100g	$228	Buy

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one Chemical Properties,Uses,Production

Synthesis

16867-03-1

600-00-0

20348-21-4

Step - (i): Synthesis of 2,2-dimethyl-2H-pyrido[3,2-B][1,4]oxazin-3(4H)-one (18.1) 2-Amino-3-hydroxypyridine (5 g, 45.45 mmol) was dissolved in acetone (50 mL) at 20-35 °C and stirred to form a solution. Subsequently K2CO3 (25.09g, 181.81mmol) was added followed by dropwise addition of ethyl 2-bromo-2-methylpropionate (13.29g, 68.18mmol). The reaction mixture was stirred at 70 °C for 16 hours. After completion of the reaction, the mixture was cooled to 20-35 °C and diluted with ice water. The resulting solid was collected by filtration and washed with water to afford the target compound as a white solid (5g, 97% yield). 1H NMR (400MHz, DMSO-d6): [specific NMR data should be added here].

References

[1] Patent: WO2015/71780, 2015, A1. Location in patent: Page/Page column 22
[2] Tetrahedron Letters, 2010, vol. 51, # 14, p. 1852 - 1855
[3] Acta Chemica Scandinavica (1947-1973), 1969, vol. 23, p. 2322 - 2324

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

Raw materials

2-Amino-3-hydroxypyridine Ethyl 2-bromoisobutyrate Acetone Potassium carbonate

Preparation Products

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one Suppliers

Global( 77)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29766	58
Neostar United (Changzhou) Industrial Co., Ltd.	+86-0519-85551759	marketing1@neostarunited.com	China	8827	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +86-189 4982 3763	sales@tnjchem.com	China	34526	58
Dayang Chem (Hangzhou) Co.,Ltd.	+86-0571-88938639 17705817739	info@dycnchem.com	China	52693	58
HANGZHOU LEAP CHEM CO., LTD.	+86-571-87711850 +8619957148339	market18@leapchem.com	China	24569	58
GIHI CHEMICALS CO.,LIMITED	+86-571-86217390; +8618058761490	info@gihichemicals.com	China	49859	58
Aladdin Scientific		tp@aladdinsci.com	United States	54746	58
Suzhou ARTK Medchem Co., Ltd.	+86-18168183658	sales1@artkmedchem.com	China	39007	58
Chongqing jooe co., ltd	+86-15223382610	info@jooe.com	China	15967	58
NANJING YINGWEN BIOTECHNOLOGY CO LTD	+86-13382787392	sales@aeechem.com	China	10000	58

Supplier	Advantage
career henan chemical co	58
Neostar United (Changzhou) Industrial Co., Ltd.	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58
HANGZHOU LEAP CHEM CO., LTD.	58
GIHI CHEMICALS CO.,LIMITED	58
Aladdin Scientific	58
Suzhou ARTK Medchem Co., Ltd.	58
Chongqing jooe co., ltd	58
NANJING YINGWEN BIOTECHNOLOGY CO LTD	58

View Lastest Price from 2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2022-01-04	2,2-dimethyl-2H,3H,4H-pyrido[3,2-b][1,4]oxazin-3-one 20348-21-4		1g	98%min	100kgs/month	Shanghai Rlavie Technology Co ltd
	2019-07-07	2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one 20348-21-4		1KG	90%-99.9%	500kg	Career Henan Chemical Co

2,2-dimethyl-2H,3H,4H-pyrido[3,2-b][1,4]oxazin-3-one
20348-21-4
98%min
Shanghai Rlavie Technology Co ltd

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one
20348-21-4
$0.00
90%-99.9%
Career Henan Chemical Co

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one Spectrum

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one(20348-21-4)¹HNMR

20348-21-4(2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one)Related Search:

2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one 2-METHYL-N-(3-MORPHOLINOPROPYL)-3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZINE-2-CARBOXAMIDE 6-Amino-2,2-dimethyl-2H-pyrido[3,2-B][1,4]oxazin-3(4H)-one 2,2-DIMETHYL-6-NITRO-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE 7-AMINO-2,2-DIMETHYL-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE

2-METHYL-3-OXO-N-(TETRAHYDRO-2-FURANYLMETHYL)-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZINE-2-CARBOXAMIDE 2-METHYL-3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZINE-2-CARBOXYLIC ACID ETHYL 2-METHYL-3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZINE-2-CARBOXYLATE 2,2-DIMETHYL-7-NITRO-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE N-(3,4-DICHLOROBENZYL)-2-METHYL-3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZINE-2-CARBOXAMIDE

N-(2-METHOXYBENZYL)-2-METHYL-3-OXO-3,4-DIHYDRO-2H-PYRIDO[3,2-B][1,4]OXAZINE-2-CARBOXAMIDE

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2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one Einecs 243-753-2 2,2-dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-one 2,2-diMethyl-2H,3H,4H-pyrido[3,2-b][1,4]oxazin-3-one 2H-Pyrido[3,2-b]-1,4-oxazin-3(4H)-one, 2,2-diMethyl- 2,2-dimethyl-4H-pyrido[2,3-e][1,4]oxazin-3-one 2,2-Dimethyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H) 2,2-DIMETHYL-2H-PYRIDO(3,2-B)(1,4)OXAZINE-3(4H)-ONE 20348-21-4