[2,4'-Bipyridine]-3,3'-dicarboxylic acid CAS 4433-02-7
| CAS No. | 4433-02-7 |
| Molecular Formula | C12H8N2O4 |
| Molecular Weight | 244.20 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.
[2,4'-Bipyridine]-3,3'-dicarboxylic acid (CAS 4433-02-7), molecular formula C12H8N2O4 and molecular weight 244.20 g/mol, is a CATO reference standard with documented purity and traceability.
[2,4'-Bipyridine]-3,3'-dicarboxylic acid (C12H8N2O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H8N2O4 |
| Molecular Weight | 244.20 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 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related Bipyridine Standards
- [2,4'-Bipyridine]-2',6'-dicarboxylic acid (CAS 115486-02-7)
- [3,4'-Bipyridine]-3',5'-dicarboxylic acid (CAS 115486-03-8)
- [2,4'-Bipyridine]-3',5-dicarboxylic acid (CAS 50722-63-9)
- [3,3'-Bipyridine]-2,2'-dicarboxylic acid (CAS 3723-32-8)
- [3,3'-Bipyridine]-5,5'-dicarboxylic acid (CAS 856796-87-7)
- [3,3'-Bipyridine]-6,6'-dicarboxylic acid (CAS 861406-83-9)
- [4,4’-Bipyridine]-2,2’-dicarboxylic Acid (CAS 85531-49-3)
- [4,4′-Bipyridine]-2,6-dicarboxylic acid (CAS 937615-43-5)
Recommended Standards
- Vanadium (V) tripropanol oxide (CAS 1686-23-3)
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- N-(2-Formyl-5,8-dioxo-5,8-dihydroquinolin-7-yl)acetamide (CAS 151418-47-2)
- 6-Aminoheptanamide (CAS 1315366-08-5)
- (E)-pentafluoro(4-nitro-3-styrylphenyl)-lambda6-sulfane (CAS 1402089-64-8)
- N-(3-Aminophenyl)butanamide (CAS 93469-29-5)
- tert-Butyl (6-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamate (CAS 2201101-30-4)
- Ethyl 5-Methyloxazole-2-carboxylate (CAS 33123-68-1)
- (3E)-2-{[(4-methylphenyl)methyl]sulfanyl}-3-(2-phenylhydrazin-1-ylidene)-3H-indole (CAS 478033-12-4)
- 2-Carbamoyl-6-nitrobenzoic Acid (CAS 65911-46-8)
- 4-Methyl-2-phenylthiazol-5-ylboronicacid (CAS 1216665-40-5)
- 1-(2-(Methylsulfonyl)ethyl)piperazine (CAS 479065-30-0)
- Peptide Impurity 27 (CAS 1350456-68-6)
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