Name | N-acetyl-L-proline |
Synonyms | Ac-Pro-OH NSC 280718 N-Ac-Pro-OH ACETYL-L-PROLINE Acetyl-L-Proline L-N-Acetylproline N-acetyl-L-proline (S)-N-Acetylproline ASINEX-REAG BAS 16579166 (2R)-1-acetylpyrrolidine-2-carboxylate (2S)-1-acetyl-2-pyrrolidinecarboxylate (2S)-1-acetylpyrrolidine-2-carboxylate N-AN-Acetyl-L-prolineN-Acetyl-L-prolinecetyl-L-proline |
CAS | 68-95-1 |
EINECS | 200-698-9 |
InChI | InChI=1/C7H11NO3/c1-5(9)8-4-2-3-6(8)7(10)11/h6H,2-4H2,1H3,(H,10,11)/p-1/t6-/m0/s1 |
InChIKey | GNMSLDIYJOSUSW-LURJTMIESA-N |
Molecular Formula | C7H11NO3 |
Molar Mass | 157.17 |
Density | 1.274±0.06 g/cm3(Predicted) |
Melting Point | 115-117 °C |
Boling Point | 366.2±35.0 °C(Predicted) |
Specific Rotation(α) | -86 º (c=1 EtOH) |
Flash Point | 175.3°C |
Solubility | Chloroform (Slightly), Methanol (Slightly), Water (Slightly) |
Vapor Presure | 2.31E-06mmHg at 25°C |
Appearance | Solid |
Color | White to off-white |
BRN | 83200 |
pKa | 3.69±0.20(Predicted) |
Storage Condition | 2-8°C |
MDL | MFCD00020837 |
Hazard Symbols | Xi - Irritant |
Safety Description | 24/25 - Avoid contact with skin and eyes. |
WGK Germany | 3 |
HS Code | 29339900 |
Hazard Class | IRRITANT |
NIST chemical information | information provided by: webbook.nist.gov (external link) |
Application | N-acetyl-L-proline is an acetylated product of L-proline. It can be prepared by one-step reaction of L-proline with acetic anhydride. N-acetyl amino acids are important fine organic chemical intermediates, which are widely used in medicine, pesticide, chemical industry and other fields. |
preparation | 35gL-proline and water were mixed and dissolved, stirred evenly, and saturated sodium carbonate solution was gradually added dropwise to adjust the pH to 7.5; wait for the temperature to drop to 10 °c, add 32ml of anhydride Dropwise, and maintain pH = 7.5 during the dropwise addition; After the dropwise addition, raise the temperature to 25 °c, and react for about 6 hours, no raw material was controlled in the spot plate, and the reaction was finished. Adjust the pH of the reaction solution to 1, and then extract 4 * 30mL with ethyl acetate, 45.11g (purity 98.6%, yield 93.1%) of N-acetyl-L-proline was obtained as an oil. |