1H-Pyrido[2,3-b][1,4]oxazin-2(3H)-one
[CAS# 136742-83-1]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyridine compound >> Pyridine derivative
• Name: 1H-Pyrido[2,3-b][1,4]oxazin-2(3H)-one
• Molecular Formula: C₇H₆N₂O₂
• Molecular Weight: 150.13
• CAS Registry Number: 136742-83-1
• EC Number: 965-040-1
• SMILES: C1C(=O)NC2=C(O1)N=CC=C2

Properties

• Solubility: 1.312e+004 mg/L (25 °C water)
• Density: 1.3±0.1 g/cm³, Calc.^*
• Index of Refraction: 1.568, Calc.^*
• Melting point: 125.44 °C
• Boiling Point: 340.33 °C, 384.2±37.0 °C (760 mmHg), Calc.^*
• Flash Point: 186.1±26.5 °C, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H302-H315-H319-H335
• Safety Statements: P261-P305+P351+P338

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - single exposure	STOT SE	3	H335
Acute toxicity	Acute Tox.	4	H302
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2A	H319