| Subject | English | German |
| agric. | active substance | Reinnährstoff |
| tech. | active substance | Wirkstoff |
| agric. | active substance | medizinisch wirksamer Bestandteil |
| agric. | active substance | Grundwirkstoff |
| pharma. | active substance | arzneilich wirksamer Bestandteil |
| pharma., environ., agric. | active substance | wirksamer Bestandteil |
| pharma. | active substance | pharmakologisch wirksamer Stoff |
| agric. | active substance | aktive Substanz |
| emerg.care | active substance | Wirkstoff |
| agric., health., anim.husb. | active substance level | Wirkstoffgehalt |
| industr. | Active Substance Master File | Wirkstoff-Stammdokumentation |
| med. | active substances | Wirkstoffe |
| med. | active substances | Aktionssubstanzen |
| med. | active substances in combination | Zusammensetzung aus mehreren wirksamen Bestandteilen |
| tech. | alpha radio active substance | Alphastrahler |
| tech. | alpha radio active substance | alphaaktive Substanz |
| chem. | b-active substance | bismutaktive Substanz |
| pharma. | biological active substance | arzneilich wirksamer Bestandteil biologischen Ursprungs |
| chem. | bismuth-active substance | bismutaktive Substanz |
| chem. | capillary active substance | kapillaraktive Substanz |
| pharma. | chiral active substances | chirale Wirkstoffe |
| med. | combination of active substances | Wirkstoffkombination |
| agric., chem. | existing active substance | alter Wirkstoff |
| agric. | herbicidal-type active substance | Stoff mit unkrautvertilgender Wirkung |
| chem. | methylene blue active substance | methylenblauaktive Substanz |
| environ., chem. | methylene-blue active substance | methylenblauaktive Substanz |
| anal.chem. | optically active substance | optisch aktive Substanz |
| nat.res. | persistent active substance | persistierender Wirkstoff |
| pharma. | pharmacologically active substance | Wirkstoff |
| pharma. | pharmacologically active substance | pharmakologisch wirksamer Stoff |
| pharma. | pharmacologically active substance | arzneilich wirksamer Bestandteil |
| pharma. | psycho-active substance | psychotroper Stoff |
| pharma. | psycho-active substance | psychotrope Substanz |
| pharma. | psycho-active substance | psychoaktive Substanz |
| health. | pure active substance | reiner Wirkstoff |
| gen. | release of the active component/substance | Freisetzung des Wirkstoffs |
| health., agric., anim.husb. | residue levels for pharmacologically active substances | Rückstände von pharmakologisch wirksamen Stoffen |
| health., agric., anim.husb. | residue levels for pharmacologically active substances | Rückstände von Stoffen mit pharmakologischer Wirkung |
| chem. | surface-active substance | oberflächenaktive Substanz |
| chem. | surface-active substance | Entspannungsmittel |