3-(4-Chlorobenzoyl)isonicotinic acid CAS 74975-29-4
| CAS No. | 74975-29-4 |
| Molecular Formula | C13H8ClNO3 |
| Molecular Weight | 261.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(4-Chlorobenzoyl)isonicotinic 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.
3-(4-Chlorobenzoyl)isonicotinic acid (CAS 74975-29-4) is a high-purity analytical reference standard with the molecular formula C13H8ClNO3 and a molecular weight of 261.66 g/mol.
Structurally, 3-(4-Chlorobenzoyl)isonicotinic acid (C13H8ClNO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 261.66 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C13H8ClNO3 |
| Molecular Weight | 261.66 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorobenzoyl Standards
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- 4-(4-Chlorobenzoyl)benzoic acid (CAS 6269-37-0)
- 5-(4-Chlorobenzoyl)-1,3-dioxaindane (CAS 1096987-61-9)
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- 4-(4-Chlorobenzoyl)-N-methyl-1H-pyrrole-2-carboxamide (CAS 303995-91-7)
- Methyl 1-(4-chlorobenzoyl)-1H-pyrrole-2-carboxylate (CAS 866154-29-2)
- 110623-43-3 1-(4-chlorobenzoyl)-2,4-dimethylthiosemicarbazide MFCD11227242 (CAS 110623-43-3)
- 2-(2-Chlorobenzoyl)-N-ethylhydrazine-1-carbothioamide (CAS 26036-01-1)
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