1-Chloroisoquinoline-6-carboxylic acid CAS 1256787-42-4
| CAS No. | 1256787-42-4 |
| Molecular Formula | C10H6ClNO2 |
| Molecular Weight | 207.61 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.
1-Chloroisoquinoline-6-carboxylic acid (CAS 1256787-42-4), molecular formula C10H6ClNO2 and molecular weight 207.61 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H6ClNO2, 1-Chloroisoquinoline-6-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 207.61 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 1-Chloroisoquinoline-6-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.
Physical & Chemical Properties
| Molecular Formula | C10H6ClNO2 |
| Molecular Weight | 207.61 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloroisoquinoline Standards
- 1-Chloroisoquinoline-3-carboxylic acid (CAS 1049606-80-5)
- 3-Chloroisoquinoline-1-carboxylic acid (CAS 1179149-10-0)
- 6-Chloroisoquinoline-1-carboxylic acid (CAS 1179149-30-4)
- 4-Chloroisoquinoline-1-carboxylic acid (CAS 1179149-31-5)
- 5-Chloroisoquinoline-1-carboxylic acid (CAS 1179149-33-7)
- 3-Chloroisoquinoline-4-carboxylic acid (CAS 123695-38-5)
- 3-Chloroisoquinoline-6-carboxylic acid (CAS 1256794-71-4)
- 1-Chloroisoquinoline-4-carboxylic acid (CAS 1260794-26-0)
Recommended Standards
- 3-Chloroquinoline-8-carboxylic acid (CAS 125300-42-7)
- (3-Chloro-4-(difluoromethoxy)phenyl)methanamine (CAS 1249925-84-5)
- 8-Hydroxyquinoline-2-carbonyl chloride (CAS 125686-91-1)
- 3-Phenylisoxazole-5-carbonyl chloride (CAS 124953-60-2)
- 2-Bromo-4-chloro-1-ethynylbenzene (CAS 1350535-10-2)
- 3-Bromo-2,4,6-trifluoroaniline (CAS 762297-95-0)
- 1,2,6,9-Tetrabromodibenzo[b,d]furan (CAS 617707-69-4)
- 2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(3,5-dimethylphenyl)-N-methylthiophene-3-sulfonamide (CAS 1207022-15-8)
- 3-Mercaptodihydrofuran-2(3H)-one (CAS 14032-62-3)
- N-[(Pyridin-2-yl)methyl]-6-(trifluoromethyl)pyridine-3-carboxamide (CAS 870516-96-4)
- 4-Phenyl-1,4-azaphosphinane 4-oxide hydrochloride (CAS 945459-82-5)
- Bilastine Impurity N19 (CAS 1181267-30-0)
- 4-Chloro-2-methoxy-7-methyl-5,6,7,8-tetrahydroquinazoline (CAS 2386463-73-4)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
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