Organic acid anhydride (substance)
| Code | 301093003 |
|---|---|
| Semantic tag | substance |
| Module | international |
| Definition | primitive |
| Effective time | 20020131 |
765174005Organic acid and/or organic acid derivative
substance
53008002Acetic anhydride
substance
255769001Hexahydrophthalic anhydride
substance
255775005Maleic anhydride
substance
711143002Methyltetrahydrophtalic anhydride
substance
77249007Phthalic anhydride
substance
255814009Tetrachlorophthalic anhydride
substance
27119002Trimellitic anhydride
substance