N1,N4-Di(pyridin-4-yl)terephthalamide CAS 216079-39-9
| CAS No. | 216079-39-9 |
| Molecular Formula | C18H14N4O2 |
| Molecular Weight | 318.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 318.33 g/mol gives N1,N4-Di(pyridin-4-yl)terephthalamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N1,N4-Di(pyridin-4-yl)terephthalamide (CAS 216079-39-9), molecular formula C18H14N4O2 and molecular weight 318.33 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, N1,N4-Di(pyridin-4-yl)terephthalamide (C18H14N4O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 318.33 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H14N4O2 |
| Molecular Weight | 318.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2018 |
| Nitrogen Atoms | 4 |
Recommended Standards
- N,N′-Bis-(4-pyridylformamide)-1,4-benzenediamine (CAS 55119-42-1)
- N1,N3-Di(pyridin-4-yl)isophthalamide (CAS 82292-44-2)
- N,N'-(1,2-Phenylene)dipicolinamide (CAS 67455-94-1)
- N-Phenyl-5-((quinolin-8-yloxy)methyl)-1,3,4-oxadiazol-2-amine (CAS 90181-74-1)
- Phenyl 4-{[(2,2-dimethylpropyl)amino]carbonyl}-1H-imidazole-5-carboxylate (CAS 1785762-28-8)
- Cis-11,14,17-Eicosatrienoic Acid (CAS 17046-59-2)
- Thiorphan D5 (CAS 2183240-70-0)
- Methyl 4-amino-2-methylquinoline-6-carboxylate (CAS 1018135-77-7)
- 3-(Hydroxymethyl)pyridin-4-ol (CAS 177592-15-3)
- Alanyl Glutamine Impurity 14 (CAS 1402135-14-1)
- 2-(4-Methylcyclohex-3-en-1-yl)propan-2-yl 3-phenylacrylate (CAS 10024-56-3)
- (S)-4-Benzyl-2-(pyrimidin-2-yl)-4,5-dihydrooxazole (CAS 1831829-89-0)
- 2-Bromo-4-fluoro-6-(trifluoromethyl)benzaldehyde (CAS 2091683-42-8)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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