2-(Biphenyl-4-yl)-4,6-diphenylpyrylium perchlorate CAS 3557-64-0
| CAS No. | 3557-64-0 |
| Molecular Formula | C29H21O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 484.93 g/mol gives 2-(Biphenyl-4-yl)-4,6-diphenylpyrylium perchlorate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(Biphenyl-4-yl)-4,6-diphenylpyrylium perchlorate (CAS 3557-64-0), molecular formula C29H21OClO4 and molecular weight 484.93 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(Biphenyl-4-yl)-4,6-diphenylpyrylium perchlorate (C29H21OClO4) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 19.0, corresponding to approximately 19 ring(s) or double-bond equivalent(s). With a molecular weight of 484.93 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 2-(Biphenyl-4-yl)-4,6-diphenylpyrylium perchlorate 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.
Physical & Chemical Properties
| Molecular Formula | C29H21O ClO4 |
| Molecular Weight | 484.93 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- (R)-3-Boc-2,2-dimethyloxazolidine-4-carboxylic Acid (CAS 660852-86-8)
- 6,7-Dihydro-1H-pyrazolo[5,1-c][1,4]oxazin-2(4H)-imine (CAS 1333508-93-2)
- 3-Chloro-5-(methoxycarbonyl)-6-methylpicolinic acid (CAS 2750929-60-1)
- 4,5-Dibromo-N-(prop-2-yn-1-yl)thiophene-2-carboxamide (CAS 1097429-88-3)
- 2-Methylthiazolo[4,5-d]pyrimidin-7-amine (CAS 857970-34-4)
- 3-(Pyrrolidin-1-yl)-4-(trifluoromethyl)pyridine (CAS 1707367-77-8)
- D-Phe6-Tirzepatide (CAS CATO-CPTD788925)
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