English Name | N-Carbethoxy-4-piperidone |
English Synonyms | Ethyl 4-oxopiperidine-1-carboxylate; 1-Ethoxycarbonyl-4-piperidone; 4-Oxo-1-piperidinecarboxylic acid ethyl ester; [15 additional aliases condensed] |
CAS Number | 29976-53-2 |
EINECS Number | 249-984-5 |
Molecular Formula | C₈H₁₃NO₃ |
Molecular Weight | 171.1937 g/mol |
InChI | InChI=1S/C₈H₁₃NO₃/c1-2-12-8(11)9-5-3-7(10)4-6-9/h2-6H₂,1H₃ |
Molecular Structure | 
|
Density | 1.155 g/cm³ (Lit. value: 1.135 g/mL at 25°C) |
Boiling Point | 273.4°C at 760 mmHg (Lit. value: 95-98°C at 1 mmHg) |
Flash Point | 87.8°C (Lit. value: 190°F/87.8°C) |
Water Solubility | Slightly soluble |
Vapor Pressure | 0.00574 mmHg (5.74×10⁻³ mmHg) at 25°C |
Physicochemical Properties | • Appearance: Pale yellow liquid • Refractive Index: 1.475 (n20D) • Stability: Stable under normal conditions • Storage: Keep away from ignition sources, sealed container, cool/dry/ventilated area |
Applications | Key intermediate for Loratadine (antihistamine drug) |
Hazard Symbol | 
Xn: Harmful |
Risk Phrases | R22: Harmful if swallowed R36/38: Irritating to eyes and skin |
Safety Phrases | S26: In case of contact with eyes, rinse immediately S37/39: Wear suitable gloves and eye/face protection |