5-Chlorobenzo[b]phenanthridine CAS 21371-76-6
| CAS No. | 21371-76-6 |
| Molecular Formula | C17H10ClN |
| Molecular Weight | 263.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Chlorobenzo[b]phenanthridine (CAS 21371-76-6), molecular formula C17H10ClN and molecular weight 263.72 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C17H10ClN, 5-Chlorobenzo[b]phenanthridine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 263.72 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C17H10ClN |
| Molecular Weight | 263.72 g/mol |
| 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorobenzo Standards
- 6-Chlorobenzo[c]phenanthridine (CAS 154283-46-2)
- 5-Chlorobenzo[i]phenanthridine (CAS 860701-09-3)
- 6-Chlorobenzo[j]phenanthridine (CAS 2178-33-8)
- 6-Chlorobenzo[b]phenazine (CAS 67296-23-5)
- 7-Chlorobenzo[b][1,10]phenanthroline (CAS 88149-77-3)
- 2-Chlorobenzo[c]phenanthrene (CAS 1196794-12-3)
- 3-(6-Chlorobenzo[d]thiazol-2-yl)pyridin-2(1H)-one (CAS 860609-22-9)
- (1-(6-Chlorobenzo[d]oxazol-2-yl)piperidin-3-yl)methanamine (CAS 1032507-61-1)
Recommended Standards
- 5-Chloro-2-(dimethylamino)-1-(4-methylphenyl)-1h-imidazole-4-carbaldehyde (CAS 215320-64-2)
- 5-Chloro-2-(3-ethoxyphenoxy)aniline (CAS 946715-26-0)
- 5-Chloro-N,N,1-trimethyl-3-phenyl-1H-pyrazole-4-carboxamide (CAS 318237-84-2)
- 5-Chloro-2-(2-methoxy-4-methylphenoxy)aniline (CAS 937606-35-4)
- Tert-butyl n-[3-(piperidin-4-yl)phenyl]carbamate (CAS 887589-53-9)
- (2,3-Difluoro-4-(hexyloxy)phenyl)boronic acid (CAS 121219-20-3)
- 1,2-O-Isopropylidene-α-D-xylofuranose (CAS 20031-21-4)
- Abiraterone Impurity 10 (CAS CATO-C4X-107010)
- 3,4-Difluorophenylglyoxal (CAS 79784-34-2)
- 0550AD 1185304-57-7 C14H20ClNO3 [2-(Piperidin-1-ylmethyl)phenoxy]-acetic acid hydrochloride (CAS 1185304-57-7)
- (R)-2-Amino-2-(3-(trifluoromethoxy)phenyl)acetic acid (CAS 1228569-10-5)
- Veratrosine (CAS 475-00-3)
- 2,3-Dimethoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)pyridine (CAS 1357387-31-5)
- Neuropeptide Y (3-36) (porcine) trifluoroacetate salt (CAS 143863-88-1)
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