55666-43-8 AR-1J9487 n-(5-chloro-2,4-dimethoxyphenyl)pyridine-3-carboxamide CAS 55666-43-8
| CAS No. | 55666-43-8 |
| Molecular Formula | C7H13BrO2 |
| Molecular Weight | 209.08 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 55666-43-8 AR-1J9487 n-(5-chloro-2,4-dimethoxyphenyl)pyridine-3-carboxamide.
55666-43-8 AR-1J9487 n-(5-chloro-2,4-dimethoxyphenyl)pyridine-3-carboxamide (CAS 55666-43-8), molecular formula C7H13BrO2 and molecular weight 209.08 g/mol, is a CATO reference standard with documented purity and traceability.
55666-43-8 AR-1J9487 n-(5-chloro-2,4-dimethoxyphenyl)pyridine-3-carboxamide (C7H13BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H13BrO2 |
| Molecular Weight | 209.08 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Br-containing |
Recommended Standards
- 2-hydroxymethyl-4-bromophenol 2316-64-5 4-bromo-2-hydroxymethylphenol 5-Bromo-2-hydroxybenzyl alcohol 5-Bromosalicyl alcohol 5-bromo-2-hydroxybenzyl alcohol, 98+% 5-bromosaligenin Bromosaligenin rarechem al bd 0040 (CAS 2316-64-5)
- (E)-1-bromo-4-(buta-1,3-dien-1-yl)benzene (CAS 32507-44-1)
- tert-Butyl 2-Bromopropanoate (CAS 39149-80-9)
- Ethyl 2-bromoisovalerate (CAS 609-12-1)
- 3-Bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole-5-carbaldehyde (CAS 2746374-98-9)
- Methyl 6-chloro-1,5-naphthyridine-3-carboxylate (CAS 1394003-59-8)
- Butafenacil (CAS 134605-64-4)
- 2,5-Dibromo-4-pyridinylboronic acid pinacol ester (CAS 1451391-18-6)
- Hydroxyalprazolam-D5 (CAS 136765-24-7)
- (1-(4-Methylpyrimidin-2-yl)piperidin-4-yl)methanol, 95% (CAS 1261232-55-6)
- 5,6-dimethyl-1-(4-methylbenzyl)-1H-benzimidazole (CAS 141211-39-4)
- 5-Ethylisoxazol-4-amine (CAS 1314975-26-2)
- Cyclohexyl anthranilate (CAS 7779-16-0)
- Tirzepatide Impurity 25 X TFA Salt (CAS CATO-C4X-324025)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com