Naphtho[2,3-α]pyrene CAS 196-42-9
| CAS No. | 196-42-9 |
| Molecular Formula | C24H14 |
| Molecular Weight | 302.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Naphtho[2,3-α]pyrene (CAS 196-42-9), molecular formula C24H14 and molecular weight 302.37 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Naphtho[2,3-α]pyrene (C24H14) contains a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 18.0, corresponding to approximately 18 ring(s) or double-bond equivalent(s). With a molecular weight of 302.37 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C24H14 |
| Molecular Weight | 302.37 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 |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Naphtho Standards
- Naphtho[1,2-b]fluoranthene (CAS 111189-32-3)
- Naphtho[2,3-b]fluoranthene (CAS 206-06-4)
- Naphtho[2,3-e]pyrene (CAS 193-09-9)
- 4-((1H-Naphtho[2,3-d][1,2,3]triazol-1-yl)methyl)benzoic acid (CAS 202582-08-9)
- 1H-Naphtho[2,3-d]imidazole (CAS 269-07-8)
- 3-(1H-naphtho[1,2-e][1,3]oxazin-2(3H)-yl)benzoic acid (CAS 369394-54-7)
- Naphtho[7,8,1,2,3-nopqr]tetraphene-6,12-dione (CAS 641-13-4)
- 1H-Naphtho[1,8-de][1,3,2]diazaborinine-2(3H)-boronic Acid Pinacol Ester (CAS 1214264-88-6)
Recommended Standards
- Dibenzo[e,l]pyrene (CAS 192-51-8)
- 2,3-Benzoperylene (CAS 197-70-6)
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- (2-(4-Fluorophenyl)-5,6,7,8-tetrahydrobenzo[d]imidazo[2,1-b]thiazol-3-yl)methanol (CAS 866009-44-1)
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- 5-Bromo-2-iodo-n-methylbenzenesulfonamide (CAS 273208-20-1)
- 2-Chloro-6,6-dimethyl-4-morpholino-8,9-dihydro-6H-[1,4]oxazino[4,3-e]purine (CAS 1382980-58-6)
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