5-(Pyridin-3-yl)isophthalic acid CAS 1264068-70-3
| CAS No. | 1264068-70-3 |
| Molecular Formula | C13H9NO4 |
| Molecular Weight | 243.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 243.21 g/mol gives 5-(Pyridin-3-yl)isophthalic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-(Pyridin-3-yl)isophthalic acid (CAS 1264068-70-3), a certified reference material (molecular formula C13H9NO4, MW 243.21 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 5-(Pyridin-3-yl)isophthalic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 243.21 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).
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 | C13H9NO4 |
| Molecular Weight | 243.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
Related Pyridin Standards
- 2-(Pyridin-3-yl)terephthalic acid (CAS 1238617-38-3)
- 2-(Pyridin-4-yl)terephthalic acid (CAS 1238617-40-7)
- 5-(Pyridin-4-yl)isophthalic acid (CAS 1262962-06-0)
- 6-(3-(Pyridin-3-yl)-1,2,4-oxadiazol-5-yl)-4,5-dihydropyridazin-3(2H)-one (CAS 1261001-68-6)
- 6-(3-(Pyridin-2-yl)-1,2,4-oxadiazol-5-yl)-4,5-dihydropyridazin-3(2H)-one (CAS 1710195-02-0)
- 2-[4-(pyridin-4-ylmethoxy)phenyl]acetic acid (CAS 1019344-27-4)
- 2-[3-(pyridin-2-ylmethoxy)phenyl]acetic acid (CAS 1291744-36-9)
- 2-[3-(pyridin-4-ylmethoxy)phenyl]acetic acid (CAS 1303492-03-6)
Recommended Standards
- 5-(2-Carboxyphenyl)nicotinic acid (CAS 1263377-28-1)
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- 2-(2-Carboxyphenyl)isonicotinic acid (CAS 1263377-16-7)
- (E)-3-(Furan-2-yl)-1-(3-nitrophenyl)prop-2-en-1-one (CAS 132434-55-0)
- 2-Benzyl-6-(4-chlorophenyl)pyridazin-3(2H)-one (CAS 941972-24-3)
- 1-(Azetidin-3-yl)-4-methylpiperidin-4-ol (CAS 1257293-87-0)
- 4-[(3,5-Dimethyl-1H-pyrazol-4-yl)methyl]-5-ethylisoxazole-3-carboxylic acid (CAS 1032296-44-8)
- 1-Boc-3-(methylamino)piperidine (CAS 392331-89-4)
- 2-(Cyclopentyloxy)benzotrifluoride (CAS 1365272-28-1)
- 3-(2-Amino-4-fluorophenyl)propanoic acid (CAS 1552264-69-3)
- 6-(2H-1,2,3-Triazol-2-yl)pyridin-3-amine (CAS 949977-25-7)
- N-(5-Bromopentyl)phthalimide n-(5-bromopentyl)-phthalimide 2-(5-Bromopentyl)isoindole-1,3-dione 954-81-4 (CAS 954-81-4)
- Methyl 2-amino-6-fluoro-1,3-benzoxazole-7-carboxylate (CAS 1820734-63-1)
- Exenatide Acetate (CAS 141732-76-5)
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