Fentanyl.citrate
| Product reference number | FEN-635-CI |
| Full chemical name | N-(1-Phenethyl-4-piperidyl)propionanilide citrate |
| Formula | C28H36N2O8 |
| Molecular weight | 528.60 |
| CAS Number | 990-73-8 |
| DEA No. | 9801 CII |
| Supplied as | citrate salt |
| Appearance | white to off-white crystalline powder |
| IR | IR corresponds |
| UV max [nm] (mol, solvent) | 257.0 ± 1.0 (400 ± 40, methanol) |
| Melting point [Celsius] | 154 ± 3 |
| HPLC purity [%] | > 98.5 |
| Free base content [%] | > 62.1 |
| Water content [%] | < 1 |
