Methylpyrrolidone
USP/1437202 - United States Pharmacopeia (USP) Reference Standard
Synonym: 1-
CAS Number: 872-50-4
Empirical Formula (Hill Notation): C5H9NO
Molecular Weight: 99.13
MDL Number: MFCD00003193
Linear Formula: C5H9NO
Product Type: Chemical
| application(s) | USP Biologics pharmaceutical (small molecule) |
| autoignition temp. | 518 °F |
| bp | 202 °C (lit.) |
| 81-82 °C/10 mmHg (lit.) | |
| density | 1.028 g/mL at 25 °C (lit.) |
| expl. lim. | 9.5 % |
| form | liquid |
| format | neat |
| grade | pharmaceutical primary standard |
| InChI | 1S/C5H9NO/c1-6-4-2-3-5(6) |
| InChI key | SECXISVLQFMRJM-UHFFFAOYSA |
| manufacturer/tradename | USP |
| mp | −24 °C (lit.) |
| refractive index | n |
| SMILES string | CN1CCCC1=O |
| vapor density | 3.4 (vs air) |
| vapor pressure | 0.29 mmHg ( 20 °C) |
| 0.99 mmHg ( 40 °C) |
| Analysis Note: | These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind. |
| Application: | Methylpyrrolidone USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. |
| General description: | Methylpyrrolidone is a highly polar solvent used in biologics formulations, particularly for drugs that require solubilization of hydrophobic compounds. It facilitates the delivery and stability of poorly soluble biologics by enhancing their dissolution properties. NMP is widely used in drug delivery systems, contributing to more efficient therapeutic delivery. The United States Pharmacopeia (USP) provides quality standards for biologics to ensure their safety, efficacy, and quality throughout the manufacturing process. These standards assist manufacturers in adhering to regulatory requirements and help safeguard public health by reducing risks associated with biologics. |
| General description: | This compound is listed in the SVHC (Substances of very high concern) candidate list ![]() |
| General description: | This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia ![]() |
| Other Notes: | Sales restrictions may apply. |
| Other Notes: | This compound is listed in the SVHC (Substances of very high concern) candidate list ![]() ![]() |
| Other Notes: | This product is part of USP Biologics Program. |
| Other Notes: | This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pha |
| Symbol | ![]() ![]() ![]() GHS07,GHS08,GHS07,GHS08 |
| Signal word | Danger-Danger |
| Hazard statements | H315 - H319 - H335 - H360FD - H315 - H319 - H335 - H360FD |
| Precautionary statements | P201 - P202 - P261 - P202 - P261 - P264 - P302 + P352 - P305 + P351 + P338 - P308 + P313 - P302 + P352 - P305 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | 195.8 °F - Pensky-Martens c |
| Flash Point(C) | 91 °C - Pensky-Martens clos |
| bp | 202 °C (lit.); 81-82 °C/10 mmHg (lit.) |
| mp | −24 °C (lit.) |
| Density | 1.028 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 41116107 |



