| Molecular Formula | C5H5NO2 |
| Molar Mass | 111.1 |
| Density | 1.1550 |
| Boling Point | 208.19°C (rough estimate) |
| Refractive Index | 1.4430 (estimate) |
| Physical and Chemical Properties | White or light gray needle-like crystals. Melting point 91-92 ℃(E type: melting point 90-91 ℃,Z type: melting point 75-76 ℃ ), boiling point 201-208 ℃ (decomposition). Soluble in ethanol, ether, carbon disulfide, benzene and acetic acid, hardly soluble in water. |
| Use | an intermediate, complexation indicator, of furamide benzylpenicillin. |