7-Hydroxybenzo[a]pyrene CAS 37994-82-4
| CAS No. | 37994-82-4 |
| Molecular Formula | C20H12O |
| Molecular Weight | 268.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Hydroxybenzo[a]pyrene (CAS 37994-82-4), molecular formula C20H12O and molecular weight 268.31 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7-Hydroxybenzo[a]pyrene (C20H12O) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C20H12O |
| Molecular Weight | 268.31 g/mol |
| Purity | >95% |
| 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.) | 1967 |
Related Hydroxybenzo Standards
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- Methyl 2-hydroxybenzo[6,7]oxepino[3,2-b]pyridine-7-carboxylate (CAS 1983120-08-6)
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- 4-Hydroxybenzo[c]acridin-3(12H)-one (CAS 83538-80-1)
Recommended Standards
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