Methyl(triphenyl)phosphonium CAS 15912-74-0
| CAS No. | 15912-74-0 |
| Molecular Formula | C19H18P |
| Molecular Weight | 277.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Methyl(triphenyl)phosphonium (CAS 15912-74-0), molecular formula C19H18P and molecular weight 277.32 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Methyl(triphenyl)phosphonium (C19H18P) is characterized by organophosphorus functionality, a polycyclic aromatic system. 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).
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 | C19H18P |
| Molecular Weight | 277.32 g/mol |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
Related Methyl Standards
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Recommended Standards
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- 3-(Cyclohexylmethyl)-4-hydroxybenzaldehyde (CAS 1243282-28-1)
- 4-oxazolecarbaldehyde (CAS 118994-84-6)
- 2-((Cyclopropylmethyl)amino)-5-nitrobenzonitrile (CAS 1007826-31-4)
- 2-(Benzo[b]thiophen-6-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 937182-06-4)
- (3-Chloro-5-methylfuran-2-yl)(phenyl)methanol (CAS 356552-69-7)
- tert-Butyl N-[(1R,3S,5S)-8-azabicyclo[3.2.1]octan-3-yl]carbamate hydrochloride (CAS 1149380-69-7)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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