| Product Name | DL-Pyroglutamic acid |
| CAS No. | 149-87-1 |
| Synonyms | DL-2-Pyrrolidone-5-Carboxylic Acid; Dl-5-Oxoproline; H-Dl-Pyr-Oh; Dl-Proline, 5-Oxo-; (+/-)-2-Pyrrolidone-5-Carboxylic Acid; 2-Pyrrolidone-5-Carboxylic Acid; (+/-)-2-Pyrrolidinone-5-Carboxylic Acid; 5-Oxo-Dl-Proline; Dl-A-Pyroglutamic Acid; Dl-Glutamic Acid Lactam; 5-oxo-L-proline |
| InChI | InChI=1/C5H7NO3/c7-4-2-1-3(6-4)5(8)9/h3H,1-2H2,(H,6,7)(H,8,9)/t3-/m0/s1 |
| Molecular Formula | C5H7NO3 |
| Molecular Weight | 129.114 |
| Density | 1.38g/cm3 |
| Melting point | 180-185℃ |
| Boiling point | 453.1°C at 760 mmHg |
| Flash point | 227.8°C |
| Water solubility | 5.67 g/100 mL (20℃) |
| Refractive index | 1.511 |
| Hazard Symbols |  Xi:Irritant; |
| Risk Codes | R36/37/38:; |
| Safety | S26:; S37/39:; |
149-87-1 dl-pyroglutamic acid
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