 
     
		    
			| Melting point | 240 °C (dec.)(lit.) | 
| alpha | -156 º (c=1, 1 N HCl) | 
| Boiling point | 295.73°C (rough estimate) | 
| density | 1.396 | 
| vapor pressure | 0Pa at 25℃ | 
| refractive index | -158 ° (C=1, 1mol/L HCl) | 
| storage temp. | 2-8°C | 
| solubility | 5g/l | 
| pka | 2.15±0.10(Predicted) | 
| form | Liquid | 
| color | Clear colorless to yellow | 
| optical activity | [α]23/D 158±3°, c = 1 in 1 M HCl | 
| Water Solubility | 5 g/L (20 ºC) | 
| BRN | 2210998 | 
| LogP | -2.25 | 
| CAS DataBase Reference | 22818-40-2(CAS DataBase Reference) | 
| EPA Substance Registry System | Benzeneacetic acid, .alpha.-amino-4-hydroxy-, (.alpha.R)- (22818-40-2) | 
| Hazard Codes | Xi | 
| Risk Statements | 36/37/38 | 
| Safety Statements | 26-36-24/25 | 
| WGK Germany | 3 | 
| TSCA | Yes | 
| HS Code | 29225000 | 
| Chemical Properties | off-white powder | 
| Uses | 4-Hydroxy-D-(-)-2-phenylglycine is an compound used mainly for the synthetic preparation of β-lactam antibiotics. | 
| Uses | 4-Hydroxy-D-(-)-2-phenylglycine (Cefadroxil EP Impurity A(Amoxicillin EP Impurity A)) is an compound used mainly for the synthetic preparation of β-lactam antibiotics. | 
| Definition | ChEBI: The D-enantiomer of 4-hydroxyphenylglycine. A non-proteinogenic amino acid found in Herpetosiphon aurantiacus. | 
| Flammability and Explosibility | Nonflammable | 
| Purification Methods | Crystallise it from water and dry it in vacuo. [Beilstein 14 I 659.] |