3,4-Dihydroxy-5-Nitrobenzoic Acid
- CAS NO.：84211-30-3
- Empirical Formula: C7H5NO6
- Molecular Weight: 199.12
- MDL number: MFCD00872080
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-11-04 16:55:03
What is 3,4-Dihydroxy-5-Nitrobenzoic Acid?
The Uses of 3,4-Dihydroxy-5-Nitrobenzoic Acid
3,4-Dihydroxy-5-nitrobenzoic Acid is a useful synthetic intermediate in the synthesis of Entacapone (E558500); a peripherally selective inhibitor of catechol-O-methyltransferase (COMT). Also an antiparkinsonian.
Properties of 3,4-Dihydroxy-5-Nitrobenzoic Acid
| Melting point: | >222oC (dec.) |
| Boiling point: | 411.1±45.0 °C(Predicted) |
| Density | 1.799±0.06 g/cm3(Predicted) |
| storage temp. | Hygroscopic, -20°C Freezer, Under inert atmosphere |
| solubility | DMSO (Slightly), Methanol (Slightly) |
| form | Solid |
| pka | 3.82±0.10(Predicted) |
| color | Yellow to Beige |
Safety information for 3,4-Dihydroxy-5-Nitrobenzoic Acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 3,4-Dihydroxy-5-Nitrobenzoic Acid
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