Metacetamol
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| File:Metacetamol-skeletal.svg | |
| Clinical data | |
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| Other names | N-Acetyl-meta-aminophenol; AMAP; meta-acetyl-aminophenol; 3-hydroxyacetanilide |
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| E number | {{#property:P628}} |
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| ECHA InfoCard | {{#property:P2566}}Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value). |
| Chemical and physical data | |
| Formula | C8H9NO2 |
| Molar mass | 151.165 g·mol−1 |
| 3D model (JSmol) | |
| Melting point | 146 to 149 °C (295 to 300 °F) |
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Metacetamol (developmental code name BS-749), also known as 3-hydroxyacetanilide and AMAP, is a non-toxic regioisomer of paracetamol with analgesic and antipyretic properties, but has never been marketed as a drug.[1][2]
Metacetamol is known to have several polymorphs.[3] Form II is metastable, while form I is stable.[3] Metacetamol polymorph II transforms to form I upon water moisture or direct contact with water and other popular solvents.[3] Metacetamol II form may be obtained on cooling in narrow temperature regime.[4]
References
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