| 中文名称 | 头孢氨苄一水化物 |
| 英文名称 | CEPHALEXIN MONOHYDRATE |
| CAS号 | 23325-78-2 |
| 分子式 | C16H19N3O5S |
| 分子量 | 365.4 |
| EINECS号 | 629-748-1 |
| 熔点 | >161°C (dec.) |
| 折射率 | 154 ° (C=0.5, H2O) |
| 溶解度 | NH4OH1M:50 mg/mL,透明,黄色 |
| 形态 | 固体 |
| 颜色 | 白色至浅米色 |
| 水溶解性 | 13.5g/L(25 ºC) |
| 默克索引编号 | 14,1974 |
| BRN | 965503 |
| 稳定性 | 溶液不稳定 |
| 危险品标志 | Xn |
| 危险类别码 | 42/43 |
| 安全说明 | 22-36/37-45-24/25 |
| WGK Germany | 3 |
| RTECS号 | XI0350000 |
| 海关编码 | 29419052 |
| 毒性 | LD50 in mice, rats (g/kg): 1.6-4.5, >5.0 orally; 0.4-1.3, >3.7 i.p. (Welles) |
Cefalexin is not effective against infections caused by methicillin-resistant Staphylococcus aureus (MRSA), Enterococcus , or Pseudomonas . Cefalexin disrupts the synthesis of the peptidoglycan layer of bacterial cell walls which is responsible for cell wall structural integrity.