A6659212
H-Pyr-OH , 97% , 98-79-3
Synonym(s):
(S)-(−)-2-Pyrrolidone-5-carboxylic acid;(S)-5-Oxo-2-pyrrolidinecarboxylic acid;L -Pyroglutamic acid;Pidolic acid
CAS NO.：98-79-3
Empirical Formula: C5H7NO3
Molecular Weight: 129.11
MDL number: MFCD00005272
EINECS: 202-700-3
| Pack Size | Price | Stock | Quantity |
| 100G | RMB33.60 | In Stock |
|
| 500G | RMB92.80 | In Stock |
|
| 2.5kg | RMB317.60 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 160-163 °C(lit.) |
| Boiling point: | 239.15°C (rough estimate) |
| alpha | -27.5 º (c=10, 1 N NaOH) |
| Density | 1.3816 (rough estimate) |
| vapor pressure | 0.002Pa at 25℃ |
| refractive index | -10 ° (C=5, H2O) |
| storage temp. | 2-8°C |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| pka | 3.32(at 25℃) |
| form | Crystalline Powder |
| color | White to off-white |
| PH | 1.7 (50g/l, H2O, 20℃) |
| Odor | wh. crystal, odorless, sl. acidic taste |
| optical activity | [α]20/D 10.5±1°, c = 5% in H2O |
| Water Solubility | 10-15 g/100 mL (20 ºC) |
| Merck | 14,8001 |
| BRN | 82132 |
| Stability: | Stable. Incompatible with bases, acids, strong oxidizing agents. |
| LogP | -1.233 at 20℃ |
| CAS DataBase Reference | 98-79-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Pidolic acid(98-79-3) |
| EPA Substance Registry System | 5-Oxo-L-proline (98-79-3) |
Description and Uses
A building block for pharmaceuticals and asymmetric synthesis
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-37/39 |
| WGK Germany | 3 |
| RTECS | TW3710000 |
| F | 21 |
| TSCA | Yes |
| HazardClass | IRRITANT |
| HS Code | 29337900 |
