4-Ethoxy-3-hydroxybenzoic acid CAS 90536-50-8
| CAS No. | 90536-50-8 |
| Molecular Formula | C9H10O4 |
| Molecular Weight | 182.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Ethoxy-3-hydroxybenzoic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Ethoxy-3-hydroxybenzoic acid (CAS 90536-50-8), molecular formula C9H10O4 and molecular weight 182.17 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H10O4, 4-Ethoxy-3-hydroxybenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 182.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Ethoxy-3-hydroxybenzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H10O4 |
| Molecular Weight | 182.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
Related Ethoxy Standards
- 4-Ethoxy-2-hydroxybenzoic acid (CAS 10435-55-9)
- 1-ethoxy-4-ethynyl-2,3-difluorobenzene (CAS 928208-56-4)
- 3-ethoxy-2-hydroxybenzoic acid (CAS 67127-72-4)
- 3-Ethoxy-4,5-dihydroxybenzaldehyde (CAS 62040-18-0)
- 3-Ethoxy-4-hydroxybenzoic acid (CAS 5438-38-0)
- 4-Ethoxy-2,3-dihydroxybenzaldehyde (CAS 757995-98-5)
- 3-Ethoxy-4-nitroaniline (CAS 116435-75-7)
- 2-Ethoxy-3-methyl-5-nitropyridine (CAS 1354224-95-5)
Recommended Standards
- 4-Hydroxy-2,5-dimethoxybenzaldehyde (CAS 80749-72-0)
- 4,7-Dimethoxybenzo[d][1,3]dioxole (CAS 23731-75-1)
- 4-Hydroxy-2,6-dimethoxybenzaldehyde (CAS 22080-96-2)
- 4,7-Difluoro-3-methyl-2,3-dihydro-1H-inden-1-one (CAS 61317-71-3)
- 4-Methyl-2,3,4,5-tetrahydropyrido[2,3-f][1,2]thiazepine 1,1-dioxide (CAS 1799977-51-7)
- 1-(5-Methyl-2-propyl-1H-imidazol-4-yl)butan-1-one (CAS 84227-38-3)
- 1-(Furan-2-yl)but-3-en-1-ol (CAS 6398-51-2)
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- 2-(1-Aminoethyl)-6-(1-fluorocyclopropyl)pyridin-4-amine (CAS 2768382-91-6)
- 5-(1-Hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-7-yl)pentanoic acid (CAS 1268335-65-4)
- 3-Ethyloctahydropyrrolo[1,2-a]pyrazin-7-ol (CAS 1822444-74-5)
- (5-(4-Ethylphenyl)isoxazol-3-yl)methanamine (CAS 1018604-80-2)
- (Z)-1,2-Bis(4-(dodecyloxy)phenyl)diazene oxide (CAS 2312-14-3)
- Biotinyl-Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 1816258-36-2)
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