| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N05 | PSYCHOLEPTICS | 安定药 |
| N05C | HYPNOTICS AND SEDATIVES | 催眠镇静药 |
| N05CC | Aldehydes and derivatives | 醛类及其衍生物 |
| N05CC01 | chloral hydrate | 水合氯醛（水化氯醛） 1 g 口服 |
| N05CC01 | chloral hydrate | 水合氯醛（水化氯醛） 1 g 直肠给药 |
| N05CC02 | chloralodol | 氯醛己醇 1.6 g 口服 |
| N05CC03 | acetylglycinamide chloral hydrate | 水合氯醛乙酰甘氨酰胺 1.7 g 口服 |
| N05CC04 | dichloralphenazone | 氯醛比林 1.3 g 口服 |
| N05CC05 | paraldehyde | 副醛 5 g 口服 |
| N05CC05 | paraldehyde | 副醛 5 g 直肠给药 |
| N05CC05 | paraldehyde | 副醛 5 g 注射 |