1-(2-Hydroxyphenyl)-2-(triphenylphosphoranylidene)ethanone CAS 81995-11-1
| CAS No. | 81995-11-1 |
| Molecular Formula | C26H21O2P |
| Molecular Weight | 396.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1-(2-Hydroxyphenyl)-2-(triphenylphosphoranylidene)ethanone (C26H21O2P) contains a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.5, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 396.42 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).
CATO supplies 1-(2-Hydroxyphenyl)-2-(triphenylphosphoranylidene)ethanone (CAS 81995-11-1), a certified reference material (molecular formula C26H21O2P, MW 396.42 g/mol) for analytical method development and quality control.
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 | C26H21O2P |
| Molecular Weight | 396.42 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
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Recommended Standards
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- 2-(2-Cyano-3-(3-nitrophenyl)acrylamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide (CAS 301338-47-6)
- 2-Methyl-4-nitrobenzoxazole (CAS 478553-83-2)
- 23719-80-4 Cyclopropylmagnesium bromide, 0.5M-0.7M in THF MFCD00672094 Bromocyclopropyl magnesium (CAS 23719-80-4)
- Ethyl 5-benzyl-5-azaspiro[2.4]heptane-7-carboxylate (CAS 351369-91-0)
- 2-(8-Methoxy-6-methyl-4-oxoquinolin-1(4H)-yl)acetohydrazide (CAS 1315343-42-0)
- [2-(Diphenylphosphino-κP)benzenethiolato-κS]hydrobis(trimethylphosphine)nickel (CAS 926319-61-1)
- 1,7-Dimethylnaphthalene (CAS 575-37-1)
- methyl 8-aminoimidazo[1,2-a]pyridine-6-carboxylate (CAS 1160994-94-4)
- (6-aminopyridin-3-yl)(2-methoxyphenyl)methanone (CAS 1189327-30-7)
- Sodium 8-amino-5-bromo-9,10-dioxo-9,10-dihydroanthracene-1,7-disulfonate (CAS 93940-12-6)
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