Valproic acid
USP/1708707 - United States Pharmacopeia (USP) Reference Standard
Synonym: 2-Propylpentanoic acid; Valproic acid
CAS Number: 99-66-1
Empirical Formula (Hill Notation): C8H16O2
Molecular Weight: 144.21
EC Number: 202-777-3
MDL Number: MFCD00002672
Linear Formula: (CH3CH2CH2)2CHCO2H
Product Type: Chemical
| API family | valproic acid |
| application(s) | pharmaceutical (small molecule) |
| bp | 220 °C (lit.) |
| density | 0.9 g/mL at 25 °C (lit.) |
| format | neat |
| grade | pharmaceutical primary standard |
| InChI | 1S/C8H16O2/c1-3-5-7(6-4-2 |
| InChI key | NIJJYAXOARWZEE-UHFFFAOYSA |
| manufacturer/tradename | USP |
| refractive index | n |
| SMILES string | CCCC(C(O)=O)CCC |
| 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: | Valproic acid USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as: • Divalproex Sodium • Divalproex Sodium Delayed-Release Capsules • Divalproex Sodium Delayed-Release Tablets • Divalproex Sodium Extended-Release Tablets • Valproate Sodium Injection • Valproic Acid • Valproic Acid Capsules |
| Biochem/physiol Actions: | Anticonvulsant that also has efficacy as a mood stabilizer in bipolar disorder |
| 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. |
| Symbol | ![]() GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H302 - H315 - H319 - H360D |
| Precautionary statements | P201 - P301 + P312 + P330 - P302 + P352 - P305 + P351 + P338 - P308 + P313 |
| Hazard Codes | Xn |
| Risk Statements | 22-36/37/38 |
| Safety Statements | 26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | 231.8 °F |
| Flash Point(C) | 111 °C |
| bp | 220 °C (lit.) |
| Density | 0.9 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 41116107 |



