8-Hydroxypyrido[2,3-d]pyridazine-5-carboxylic acid CAS 13629-38-4
| CAS No. | 13629-38-4 |
| Molecular Formula | C8H5N3O3 |
| Molecular Weight | 191.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
8-Hydroxypyrido[2,3-d]pyridazine-5-carboxylic acid (CAS 13629-38-4), molecular formula C8H5N3O3 and molecular weight 191.14 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H5N3O3, 8-Hydroxypyrido[2,3-d]pyridazine-5-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 191.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C8H5N3O3 |
| Molecular Weight | 191.14 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 3 |
Related Hydroxypyrido Standards
- 8-Hydroxypyrido[3,2-d]pyrimidine-7-carboxylic acid (CAS 65332-71-0)
- 7-Hydroxypyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidin-6(7H)-one (CAS 1248517-85-2)
- 3-Hydroxypyrido[1,2-a]indole-10-carbonitrile (CAS 339106-98-8)
- 8-Hydroxypyrido[2,3-b]pyrazin-6(5H)-one (CAS 1003608-88-5)
- Ethyl 2-Hydroxypyrido[2,3-b]pyrazine-3-carboxylate (CAS 114983-15-2)
- Ethyl 8-hydroxypyrido[3,2-d]pyrimidine-7-carboxylate (CAS 1352395-77-7)
- 4-Benzyl-2-hydroxypyrido[2,3-b]pyrazin-3(4H)-one (CAS 1243022-01-6)
- Ethyl 3-hydroxypyrido[1,2-a]indole-10-carboxylate (CAS 22991-17-9)
Recommended Standards
- 6-Formylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid (CAS 1356016-23-3)
- 5-Cyano-2-nitrobenzamide (CAS 1369835-94-8)
- 6-Amino-5-nitro-2-thio-uracil-13C2,15N (CAS 1330266-31-3)
- 5-(2-Pyrazinyl)isoxazole-3-carboxylic Acid (CAS 1375064-55-3)
- 6-Amino-1-(pyridin-3-ylmethyl)-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 879444-24-3)
- (E)-5-Methoxy-1,3,3-trimethyl-2-(2-(1-methyl-2-phenyl-1H-indol-3-yl)vinyl)-3H-indol-1-ium chloride (CAS 5538-87-4)
- n-((1,3,5-Trimethyl-1h-pyrazol-4-yl)methyl)cyclopentanamine (CAS 1152913-82-0)
- 2,5-Difluoro-4-nitrotoluene, 97% (CAS 141412-60-4)
- ethyl (1S,3S,4S)-4-fluoro-3-hydroxycyclohexane-1-carboxylate (CAS 2165650-19-9)
- Methyl 6-aminoheptanoate (CAS 205533-80-8)
- 1-(4-Nitrophenyl)piperidine-4-carbaldehyde (CAS 144872-32-2)
- 4-Phenylpyrimidine-2-carboxylic acid (CAS 74647-39-5)
- 4-Hydroxy-2',3,5,5'-tetrachlorobiphenyl (CAS 245084-57-5)
- Q-Peptide trifluoroacetate salt (CAS 1361235-89-3)
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