9-Methoxybenzo[a]pyrene CAS 17573-32-9
| CAS No. | 17573-32-9 |
| Molecular Formula | C21H14O |
| Molecular Weight | 282.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 9-Methoxybenzo[a]pyrene 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 9-Methoxybenzo[a]pyrene (CAS 17573-32-9), a certified reference material (molecular formula C21H14O, MW 282.34 g/mol) for analytical method development and quality control.
The molecular framework of 9-Methoxybenzo[a]pyrene (C21H14O) is characterized by a steroid core, a hydroxyl group, an ether linkage. 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. 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 | C21H14O |
| Molecular Weight | 282.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Methoxybenzo Standards
- 2-(6-Methoxybenzo[d][1,3]dioxol-5-yl)benzofuran-6-ol (CAS 211568-86-4)
- N-(4-methoxybenzo[d]thiazol-2-yl)benzamide (CAS 35412-20-5)
- N-(6-methoxybenzo[d]thiazol-2-yl)benzamide (CAS 35353-26-5)
- Butyl (6-methoxybenzo[d]thiazol-2-yl)carbamate (CAS 433258-98-1)
- 4-((6-Methoxybenzo[d]thiazol-2-yl)amino)-4-oxobutanoic acid (CAS 92340-65-3)
- 4-(6-Methoxybenzo[d]thiazol-2-yl)-N,N-dimethylaniline (CAS 10205-71-7)
- N-(6-Methoxybenzo[d]thiazol-2-yl)nicotinamide (CAS 300697-10-3)
- 5-((7-Methoxybenzo[d][1,3]dioxol-5-yl)methyl)-4,5-dihydroisoxazole-3-carboxamide (CAS 924859-12-1)
Recommended Standards
- (S)-N-((S)-1-Amino-1-oxopropan-2-yl)-1-((S)-pyrrolidine-2-carbonyl)pyrrolidine-2-carboxamide (CAS 173178-67-1)
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- N-(3-{5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridin-3-yl}phenyl)cyclopropanecarboxamide (CAS 1798632-46-8)
- 4-Cyclopropoxy-N1,N3,N3-trimethylisophthalamide (CAS 1243282-80-5)
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- Phenyl(5-(pyrazin-2-yl)-1H-1,2,4-triazol-3-yl)methanamine (CAS 1708370-91-5)
- Yellow no. 8 (CAS 66612-11-1)
- 4-Hydroxy-4'-(pyrrolidin-1-ylsulfonyl)-[1,1'-biphenyl]-3-carbaldehyde (CAS 1261926-05-9)
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