| Name | Hydroxymethylphosphonic Acid Monoethyl Ester |
| Synonyms | Hydroxymethylphosphonic Acid Monoethyl Ester Adefovir Impurity 34 Phosphonic acid, (hydroxymethyl)-, monoethyl ester (9CI) |
| CAS | 260252-89-9 |
| Molecular Formula | C3H9O4P |
| Molar Mass | 140.07 |
| Density | 1.352±0.06 g/cm3(Predicted) |
| Boling Point | 253.4±42.0 °C(Predicted) |
| pKa | 2.76±0.10(Predicted) |