Potassium 3,4-dihydroxybenzoate CAS 91753-30-9
| CAS No. | 91753-30-9 |
| Molecular Formula | C7H5O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Potassium 3,4-dihydroxybenzoate 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.
Potassium 3,4-dihydroxybenzoate (CAS 91753-30-9), molecular formula C7H5O4K and molecular weight 192.21 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Potassium 3,4-dihydroxybenzoate (C7H5O4K) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.5, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 192.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C7H5O4 K |
| Molecular Weight | 192.21 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, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
Related Potassium Standards
- Methyl 3,4-Dihydroxybenzoate (CAS 2150-43-8)
- Methyl 3,5-dihydroxybenzoate (CAS 2150-44-9)
- Methyl 2,6-Dihydroxybenzoate (CAS 2150-45-0)
- Methyl 2,5-Dihydroxybenzoate (CAS 2150-46-1)
- Methyl 2,3-Dihydroxybenzoate (CAS 2411-83-8)
- Sodium 3,4-dihydroxybenzoate (CAS 24885-75-4)
- Ethyl 2,3-dihydroxybenzoate (CAS 3943-73-5)
- Ethyl 3,4-Dihydroxybenzoate (CAS 3943-89-3)
Recommended Standards
- 7-hydroxy-2-methyl-4H-chromen-4-one (CAS 6320-42-9)
- Ethyl 4-hydroxy-6-methylpyrimidine-2-carboxylate (CAS 1803736-02-8)
- 2,2'-((2-(Oxiran-2-ylmethoxy)-1,3-phenylene)bis(methylene))bis(oxirane) (CAS 13561-08-5)
- 8-Bromoquinoline-2,4-dicarboxylic acid (CAS 216060-06-9)
- 2-Bromo-3-chloro-4-(difluoromethyl)-5-nitropyridine (CAS 1805384-63-7)
- 1-{4H,6H,7H-thieno[3,2-c]pyran-4-yl}ethan-1-amine hydrochloride (CAS 1803596-13-5)
- 2-(Dimethoxymethyl)-3-fluoroaniline (CAS 2244086-00-6)
- 3-{[(4-methylphenyl)methyl]sulfanyl}-1h-1,2,4-triazole (CAS 302804-66-6)
- 5,6-Dimethyl-1H-benzo[d]imidazole-2-carbonitrile (CAS 88422-30-4)
- Semaglutide impurity 67 (CAS CATO-C4X-222667)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com