3-Hydroxy-1,4-dihydroquinoxaline-2-carbaldehyde CAS 855874-32-7
| CAS No. | 855874-32-7 |
| Molecular Formula | C9H8N2O2 |
| Molecular Weight | 176.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Hydroxy-1,4-dihydroquinoxaline-2-carbaldehyde.
CATO supplies 3-Hydroxy-1,4-dihydroquinoxaline-2-carbaldehyde (CAS 855874-32-7), a certified reference material (molecular formula C9H8N2O2, MW 176.17 g/mol) for analytical method development and quality control.
3-Hydroxy-1,4-dihydroquinoxaline-2-carbaldehyde (C9H8N2O2) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C9H8N2O2 |
| Molecular Weight | 176.17 g/mol |
| Appearance | Off-white to pale 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Hydroxy Standards
- 3-Hydroxy-2-methylquinazolin-4(3H)-one (CAS 1010-70-4)
- 5-Hydroxy-4-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 106367-54-8)
- 1-(5-Hydroxy-1H-pyrrolo[2,3-b]pyridin-1-yl)ethanone (CAS 1082041-98-2)
- 4-Hydroxy-1H,1'H-[2,2'-bipyrrole]-5-carbaldehyde (CAS 108929-20-0)
- 5-Hydroxy-4-methyl-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 1190317-04-4)
- 4-hydroxy-7-methyl-1,8-Naphthyridin-2(1H)-one (CAS 120537-66-8)
- 2-Hydroxy-N-(prop-2-yn-1-yl)nicotinamide (CAS 1209306-34-2)
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Recommended Standards
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- 3-hydroxy-2-methyl-4H-chromen-4-one (CAS 22105-10-8)
- 1-Acetylazepan-4-one (CAS 50492-23-4)
- (2S)-2-Amino-1-(3-((dimethylamino)methyl)pyrrolidin-1-yl)-3-methylbutan-1-one (CAS 1354025-13-0)
- 2-(Difluoromethyl)-N-(thiophen-3-yl)-4,5-dihydrofuran-3-carboxamide (CAS 616204-54-7)
- tert-Butyl 3-amino-3-(4-fluorophenyl)azetidine-1-carboxylate (CAS 2156173-79-2)
- Methyl 3-{[3-(diethylamino)propyl]amino}-2-methylpropanoate (CAS 92036-92-5)
- 2-Acetamido-2-deoxy-3-O-(α-L-fucopyranosyl)-D-glucopyranose Pentaacetate (CAS 309263-13-6)
- 4-nitrophenyl dichloro(sulfanylidene)phosphinite (CAS 4225-51-8)
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