Physical state and melting point of cinnarizine free base, HCl salt and series one sulfates.
| |||
|---|---|---|---|
| # | Name | Physical state | T m/Tg (°C) |
| 1 | Free base | Crystalline | 122–123 |
| 1a | Hydrochloride | Crystalline | 207 |
| 1b | 1-Hexyl sulfate (C6) | Amorphous | 35–36 |
| 1c | 1-Octyl sulfate (C8) | Viscous oil | <25 |
| 1d | 1-Decyl sulfate (C10) | Viscous oil | <25 |
| 1e | 1-Dodecyl sulfate (C12) | Viscous oil | <25 |
| 1f | 1-Tetradecyl sulfate (C14) | Viscous oil | <25 |
| 1g | 1-Hexadecyl sulfate (C16) | Viscous oil | <25 |
| 1h | 1-Octadecyl sulfate (C18) | Viscous oil | <25a |
a
Cinnarizine 1-octadecyl sulfate showed signs of crystallization after long term storage.