Description
2-Phenylisonicotinic acid (CAS No. 55240-51-2) is a high-purity organic compound with the molecular formula C12H9NO2, widely utilized in pharmaceutical and chemical research. This compound, also known as 2-phenylpyridine-4-carboxylic acid, features a phenyl group attached to the 2-position of an isonicotinic acid scaffold, making it a valuable intermediate for heterocyclic synthesis. With a molecular weight of 199.21 g/mol, it is supplied as a fine white to off-white crystalline powder, ensuring optimal solubility and reactivity for laboratory applications. Ideal for medicinal chemistry, material science, and ligand design, our product undergoes rigorous QC testing (HPLC, NMR) to guarantee ≥98% purity, meeting the stringent requirements of researchers and industrial scientists. Packaged in amber glass vials or bulk quantities with moisture-resistant seals to ensure stability.
Properties
- CAS Number: 55240-51-2
- Complexity: 224
- IUPAC Name: 2-phenylpyridine-4-carboxylic acid
- InChI: InChI=1S/C12H9NO2/c14-12(15)10-6-7-13-11(8-10)9-4-2-1-3-5-9/h1-8H,(H,14,15)
- InChI Key: OMMKWOVBOKXXQU-UHFFFAOYSA-N
- Exact Mass: 199.063328530
- Molecular Formula: C12H9NO2
- Molecular Weight: 199.20
- SMILES: C1=CC=C(C=C1)C2=NC=CC(=C2)C(=O)O
- Topological: 50.2
- Monoisotopic Mass: 199.063328530
- Synonyms: 2-Phenylisonicotinic acid, 55240-51-2, DTXSID50376505, DTXCID10327533, 692-864-6, 2-phenylpyridine-4-carboxylic Acid, 4-Pyridinecarboxylic acid, 2-phenyl-, MFCD03086008, 2-PhenylisonicotinicAcid, 2-(Phenyl)-isonicotinic acid, 2-phenyl-isonicotinic acid, 4-Carboxy-2-phenylpyridine, SCHEMBL648273, CHEMBL5404148, OMMKWOVBOKXXQU-UHFFFAOYSA-N, ALBB-019460, SBB052864, AKOS004911929, CCG-139870, PS-4415, SY028466, P2453, E10166, EN300-6492941, AO-801/41077479, Z2905488608
Application
2-Phenylisonicotinic acid serves as a key building block in the synthesis of bioactive molecules, particularly in the development of kinase inhibitors and metal-organic frameworks (MOFs). Its structural motif is leveraged in pharmaceutical research for designing ligands targeting neurodegenerative diseases. The compound is also employed in material science as a precursor for functionalized pyridine derivatives used in optoelectronic materials.
Safety and Hazards
GHS Hazard Statements
- H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
- H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
- H335 (50%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Precautionary Statements
- P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Hazard Classes and Categories
- Skin Irrit. 2 (100%)
- Eye Irrit. 2 (100%)
- STOT SE 3 (50%)
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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.


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