2H-1,4-BENZOXAZIN-3(4H)-ONE

2H-1,4-BENZOXAZIN-3(4H)-ONE Structure
CAS No.
5466-88-6
Chemical Name:
2H-1,4-BENZOXAZIN-3(4H)-ONE
Synonyms
AURORA KA-5421;4-AZA-3-CHROMANONE;OTAVA-BB BB7020041238;1,4-Benzoxazine-3-one;BENZO[B]MORPHOLIN-3-ONE;4H-1,4-benzoxazin-3-one;2H-1,4-Benzoxazin-3-one;4H-BENZO[1,4]OXAZIN-3-ONE;3-OXO-4H-BENZO[1,4]OXAZINE;2H-1,4-BENZOXAZIN-3(4H)-ONE
CBNumber:
CB5111761
Molecular Formula:
C8H7NO2
Molecular Weight:
149.15
MOL File:
5466-88-6.mol
MSDS File:
SDS
Modify Date:
2023/4/23 13:52:06

2H-1,4-BENZOXAZIN-3(4H)-ONE Properties

Melting point 173-175 °C(lit.)
Boiling point 337.7±31.0 °C(Predicted)
Density 1.244±0.06 g/cm3(Predicted)
storage temp. Sealed in dry,Room Temperature
solubility methanol: soluble25mg/mL, clear, colorless
form Flakes or Powder
pka 12.89±0.20(Predicted)
color White to yellow to tan
λmax 286nm(EtOH)(lit.)
CAS DataBase Reference 5466-88-6(CAS DataBase Reference)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-37/39
WGK Germany  3
RTECS  DM3270000
HazardClass  IRRITANT
HS Code  29349990
NFPA 704
1
2 0

2H-1,4-BENZOXAZIN-3(4H)-ONE price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) 383503 2H-1,4-Benzoxazin-3(4H)-one 99% 5466-88-6 5G ₹3334.1 2022-06-14 Buy
Sigma-Aldrich(India) 383503 2H-1,4-Benzoxazin-3(4H)-one 99% 5466-88-6 25G ₹8865.68 2022-06-14 Buy
TCI Chemicals (India) B4553 2H-1,4-Benzoxazin-3(4H)-one min. 98.0 % 5466-88-6 5G ₹1800 2022-05-26 Buy
TCI Chemicals (India) B4553 2H-1,4-Benzoxazin-3(4H)-one min. 98.0 % 5466-88-6 25G ₹6000 2022-05-26 Buy
ALFA India ALF-H27622-14 2H-1,4-Benzoxazin-3(4H)-one, 99% 5466-88-6 25g ₹8581 2022-05-26 Buy
Product number Packaging Price Buy
383503 5G ₹3334.1 Buy
383503 25G ₹8865.68 Buy
B4553 5G ₹1800 Buy
B4553 25G ₹6000 Buy
ALF-H27622-14 25g ₹8581 Buy

2H-1,4-BENZOXAZIN-3(4H)-ONE Chemical Properties,Uses,Production

Chemical Properties

white to almost white crystalline powder

Synthesis Reference(s)

Synthesis, p. 851, 1984 DOI: 10.1055/s-1984-30993

General Description

2H-1,4-Benzoxazin-3(4H)-one, a benzoxazine derivative, is a heterocyclic building block for various natural and synthetic organic compounds. It has been reported as an intermediate during the biogenesis of cyclic hydoxamic acids in maize. Its standard molar enthalpy of formation and tautomerization energy of its tautomers has been evaluated by calorimetric and computational methods. It has been synthesized by reacting o-aminophenol with chloroacetyl chloride in the presence of butanone and aqueous NaHCO3.

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4H-1,4-benzoxazin-3-one 2H-1,4-Benzoxazin-3(4H)-one 4H-BENZO[1,4]OXAZIN-3-ONE 4-AZA-3-CHROMANONE 2H-1,4-BENZOXAZIN-3(4H)-ONE 2H-1,4-BENZOXAZINE-3(4H)-ONE 2H-BENZO[B][1,4]OXAZIN-3(4H)-ONE OTAVA-BB BB7020041238 BENZO[B]MORPHOLIN-3-ONE AURORA KA-5421 2H-1,4-Benzooxazin-3(4H)-one 3-OXO-4H-BENZO[1,4]OXAZINE 2H-1,4-Benzoxazin-3(4H)-one, (4-Aza-3-chromanone) 2,4-Dihydro-3H-1,4-benzoxazine-3-one 3,4-Dihydro-2H-1,4-benzoxazine-3-one 2H-1,4-Benzoxazin-3(4H)-one,99% 2H-1,4-BENZOXAZIN-3(4H)-ONE 99% 3,4-Dihydro-2H-1,4-benzoxazin-3-one 3,4-dihydro-2H-1,4-benzoxazin-3(4H)-one 2H-1,4-Benzoxazin-3(4H)-one (8CI)(9CI) 2H-1,4-Benzoxazin-3-one 1,4-Benzoxazine-3-one 2H-1,4-Benzoxazin-3(4H)-one > 5466-88-6 2H-1,4-BENZOXAZIN-3(4H)-ONE JRH-03201, 2H-Benzo[b][1,4]oxazin-3(4H)-one, 97% 2H-1,4-Benzoxazin-3(4H)-one (6CI, 7CI, 8CI, 9CI, ACI) 2H-1,4- 6-Benzoxazin-3(4H)-one 5466-88-6 Heterocyclic Building Blocks Building Blocks Benzoxazines pharmacetical API intermediates Miscellaneous Benzoxazines Building Blocks Heterocyclic Building Blocks