| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| R | RESPIRATORY SYSTEM | 呼吸系统 |
| R03 | DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES | 阻塞性气管疾病用药 |
| R03A | ADRENERGICS, INHALANTS | 肾上腺素能药，吸入剂 |
| R03AC | Selective beta-2-adrenoreceptor agonists | 选择性β2-肾上腺素受体促效药 |
| R03AC09 | tretoquinol | 曲托喹酚 |