| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N01 | ANESTHETICS | 麻醉药 |
| N01B | ANESTHETICS, LOCAL | 局部麻醉药 |
| N01BA | Esters of aminobenzoic acid | 氨苯甲酸酯类 |
| N01BA01 | metabutethamine | 美布他明 |
| N01BA02 | procaine | 普鲁卡因（奴弗卡因） |
| N01BA03 | tetracaine | 丁卡因 |
| N01BA04 | chloroprocaine | 氯普鲁卡因 |
| N01BA05 | benzocaine | 苯佐卡因 |
| N01BA52 | procaine, combinations | 普鲁卡因，复方 |