4-Chloro-7-methoxy-5H-pyrimido[5,4-b]indole CAS 676602-23-6
| CAS No. | 676602-23-6 |
| Molecular Formula | C11H8ClN3O |
| Molecular Weight | 233.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 4-Chloro-7-methoxy-5H-pyrimido[5,4-b]indole (CAS 676602-23-6), a certified reference material (molecular formula C11H8ClN3O, MW 233.65 g/mol) for analytical method development and quality control.
The molecular framework of 4-Chloro-7-methoxy-5H-pyrimido[5,4-b]indole (C11H8ClN3O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C11H8ClN3O |
| Molecular Weight | 233.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 6-Chloro(pyridin-4-yl)pyridine-2-carboxamide (CAS 1026136-67-3)
- 6-Chloro-N-pyridin-4-ylnicotinamide (CAS 1090481-07-4)
- 2-Chloro-5-(pyridin-2-yl)benzoic acid (CAS 1143024-51-4)
- 5-Chloro-6-phenylpyridine-3-carboxylic acid (CAS 1148027-23-9)
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- 2-Chloro-5-phenylisonicotinic acid (CAS 1214323-23-5)
Recommended Standards
- 4-Chloro-6-phenylquinoline (CAS 5443-23-2)
- 4-Chloro-8-methoxy-5H-pyrimido[5,4-b]indole (CAS 98792-03-1)
- 4-Chloro-6-(furan-2-yl)-5-methyl-5H-pyrrolo[3,2-d]pyrimidine (CAS 871025-17-1)
- 4-Chloro-9-methoxy-5H-pyrimido[5,4-b]indole (CAS 843621-80-7)
- 3-(6-Chloro-1H-indazol-3-yl)propan-1-amine (CAS 118511-98-1)
- 4-Chloro-2-fluoro-n-propylbenzene-1-sulfonamide (CAS 1094563-55-9)
- 4-(3,4-Dichlorophenyl)-2-(4-methylphenyl)-4-oxobutanoic acid (CAS 344282-29-7)
- Atosiban Impurity 99 (CAS CATO-C4X-229399)
- 3-(3-(Thiophen-2-yl)-1,2,4-oxadiazol-5-yl)propan-1-amine (CAS 926208-88-0)
- methyl 1H-imidazole-5-carboxylate;hydrochloride (CAS 127607-71-0)
- (S)-3-hydroxycyclohexan-1-one (CAS 166019-39-2)
- exo-3-Aminomethyl-8-boc-8-azabicyclo[3.2.1]octane (CAS 273207-53-7)
- Abrocitinib (CAS 1622902-68-4)
- Semaglutide impurity 99 (CAS CATO-C4X-222699)
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