4-Formylquinoline-8-carboxylic acid CAS 91059-56-2
| CAS No. | 91059-56-2 |
| Molecular Formula | C11H7NO3 |
| Molecular Weight | 201.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Formylquinoline-8-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies 4-Formylquinoline-8-carboxylic acid (CAS 91059-56-2), a certified reference material (molecular formula C11H7NO3, MW 201.18 g/mol) for analytical method development and quality control.
Structurally, 4-Formylquinoline-8-carboxylic acid (C11H7NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 201.18 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H7NO3 |
| Molecular Weight | 201.18 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 1 |
Related Formylquinoline Standards
- 2-Formylquinoline-5-carboxylic acid (CAS 155602-26-9)
- 2-Formylquinoline-4-carboxylic acid (CAS 36783-44-5)
- 2-Formylquinoline-6-carboxylic acid (CAS 904885-87-6)
- 2-Formylquinoline-8-carboxylic acid (CAS 904885-85-4)
- 4-Formylquinoline-6-carboxylic acid (CAS 898391-71-4)
- 2-Formylquinoline-4-carboxamide (CAS 66975-43-7)
- Methyl 2-formylquinoline-4-carboxylate (CAS 60506-24-3)
- Methyl 3-formylquinoline-4-carboxylate (CAS 81355-38-6)
Recommended Standards
- 4H-Benzo[4,5]imidazo[1,2-b]pyrazole-3-carboxylic acid (CAS 64096-92-0)
- 4-Acetoxy-1-methyl-5-oxopyrrolidine-3-carboxylic acid (CAS 2851530-84-0)
- 4-Methyl-7-nitro-1H-indole-3-carbonitrile (CAS 289483-82-5)
- 4,9-dihydropyrano[3,4-b]indole-1,3-dione (CAS 60442-29-7)
- 5-((5-(Hydroxymethyl)furan-2-yl)methylene)thiazolidine-2,4-dione (CAS 262601-99-0)
- 2-(6-(Morpholinosulfonyl)-2-oxobenzo[d]oxazol-3(2H)-yl)acetic acid (CAS 899708-44-2)
- 2-(3-(Hydroxymethyl)piperidin-1-yl)-N-(3-methoxypropyl)acetamide (CAS 1460282-31-8)
- 8-(3,5-Difluorophenyl)-8-oxooctanoic acid (CAS 898765-85-0)
- 3-(1-phenyl-1H-1,2,3,4-tetrazol-5-yl)propanoic acid (CAS 26366-02-9)
- 4-(2,3-Dihydro-1H-inden-5-yl)-N-[(furan-2-yl)methyl]phthalazin-1-amine (CAS 866133-81-5)
- 5-(2,3-Dihydro-1-benzofuran-5-yl)-1H-pyrazole-3-carboxylic acid (CAS 1491131-49-7)
- (1E)-3-(5-cyclopropyl-1H-pyrazol-1-yl)-N'-hydroxypropanimidamide (CAS 1006323-01-8)
- Methyl 2-(((3-oxo-5-phenyl-2,3-dihydro-1H-pyrazol-4-yl)methylene)amino)acetate (CAS 338975-52-3)
- Semaglutide impurity 64 (CAS CATO-C4X-222664)
Why CATO?
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