4-(4-Pyridyl)benzoic acid CAS 4385-76-6
| CAS No. | 4385-76-6 |
| Molecular Formula | C12H9NO2 |
| Molecular Weight | 199.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(4-Pyridyl)benzoic acid (CAS 4385-76-6), molecular formula C12H9NO2 and molecular weight 199.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-(4-Pyridyl)benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 199.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 4-(4-Pyridyl)benzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H9NO2 |
| Molecular Weight | 199.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Pyridyl Standards
- N-(3-Pyridyl)picolinamide (CAS 184870-10-8)
- 3-(2-Pyridyl)benzoic Acid (CAS 4467-07-6)
- 4-(3'-Pyridyl)benzoic acid 4-(3-pyridyl)benzoic acid 4-(pyridin-3-yl)benzoic acid 4-pyridin-3-yl-benzoic acid 4-pyridin-3-ylbenzoic acid 4-(3-pyridinyl)benzoic acid 4-pyrid-3-ylbenzoic acid 4385-75-5 (CAS 4385-75-5)
- 4-(4-Pyridyl)phenylboronic Acid (CAS 1045332-30-6)
- 4-(2-Pyridyl)phenylboronic Acid (CAS 170230-27-0)
- 4-(3-Pyridyl)phenylboronic Acid (CAS 170230-28-1)
- 3-(3-Pyridyl)phenylboronic Acid (CAS 351422-72-5)
- α-Phenyl-α-(2-pyridyl)acetonitrile-d4 (CAS 1217002-29-3)
Recommended Standards
- 4-(4-Aminobutoxy)-1,2,5-oxadiazole-3-carboximidamide (CAS 339061-36-8)
- 4-(5-(Aminomethyl)-4H-1,2,4-triazol-3-yl)benzonitrile (CAS 944897-14-7)
- 4-(3-Pyridyloxy)benzaldehyde (CAS 87626-41-3)
- 4-(diethylamino)-1,1,1-trifluorobutan-2-ol (CAS 680211-16-9)
- 2-Methylbenzo[d]oxazol-6-ol (CAS 5078-07-9)
- Methyl 5-(dimethoxymethyl)-1-phenyl-1H-pyrazole-4-carboxylate (CAS 957947-49-8)
- 2,6-Dibenzhydryl-4-(trifluoromethyl)aniline (CAS 1416368-00-7)
- (2,3-Difluoro-6-methoxy-4-methylphenyl)(methyl)sulfane (CAS 2624416-84-6)
- 6-Chloro-4-Nitro-2-(Trifluoromethyl)-1H-Benzimidazole (CAS 3671-18-9)
- 9-Octadecenoic acid, sodium salt, (9E)- (CAS 18175-45-6)
- 1-(4-((3-Morpholinopropyl)amino)piperidin-1-yl)ethan-1-one (CAS 1119450-06-4)
- 1-(2-Methoxyethyl)-3-(naphthalen-1-ylmethyl)-1-(thiophen-3-ylmethyl)urea (CAS 1219844-91-3)
- 1-(2,4,6-Trimethylbenzyl)cyclobutane-1-carboxylic acid (CAS 1478874-53-1)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
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