Methyl 4-hydroxy-1-oxo-1,2-dihydroisoquinoline-3-carboxylate CAS 13972-97-9
| CAS No. | 13972-97-9 |
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 4-hydroxy-1-oxo-1,2-dihydroisoquinoline-3-carboxylate (CAS 13972-97-9), molecular formula C11H9NO4 and molecular weight 219.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H9NO4, Methyl 4-hydroxy-1-oxo-1,2-dihydroisoquinoline-3-carboxylate 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 219.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
CATO manufactures Methyl 4-hydroxy-1-oxo-1,2-dihydroisoquinoline-3-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 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, 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 | 1 |
Related Methyl Standards
- 2-(7-Hydroxy-2-oxo-2h-chromen-4-yl)acetamide (CAS 101999-45-5)
- 4-Hydroxy-7-methoxyquinoline-6-carboxylic acid (CAS 1190837-18-3)
- N-(4-hydroxy-2-oxo-2H-chromen-3-yl)acetamide (CAS 13948-45-3)
- 3-hydroxy-7-methoxyquinoline-4-carboxylic acid (CAS 1487292-95-4)
- 5-Hydroxy-3-phenylisoxazole-4-carboxylic acid (CAS 15969-44-5)
- 2-Hydroxy-8-methoxyquinoline-3-carboxylic acid (CAS 169321-92-0)
- 5-Hydroxy-2-methyl-1-oxo-1,2-dihydroisoquinoline-6-carboxylic acid (CAS 1783406-37-0)
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Recommended Standards
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- 2-Ethyl-1,3-dioxoisoindoline-5-carboxylic acid (CAS 137247-85-9)
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- 4-(3-Amino-4-methoxyphenyl)-N,N-diethylthiazol-2-amine (CAS 1443287-34-0)
- N-(2-Bromo-4-methylphenyl)-2-((3-thiomorpholinopyrazin-2-yl)thio)acetamide (CAS 1226449-28-0)
- 5-(3-(2-(Trifluoromethyl)phenyl)-1,2,4-oxadiazol-5-yl)thiazol-2-amine (CAS 1707371-62-7)
- 4-Nitropiperidine (CAS 890853-07-3)
- 3-Nitro-4-(2,2,2-trifluoroethoxy)aniline (CAS 1000339-84-3)
- 3-(3-Hydroxyphenyl)propanenitrile (CAS 23941-88-0)
- β-Asp9-Tirzepatide (CAS CATO-CPTD788931)
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