3-Methyl-5-((triphenylphosphoranylidene)methyl)isoxazole CAS 110302-06-2
| CAS No. | 110302-06-2 |
| Molecular Formula | C23H20NOP |
| Molecular Weight | 357.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methyl-5-((triphenylphosphoranylidene)methyl)isoxazole (CAS 110302-06-2), molecular formula C23H20NOP and molecular weight 357.38 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C23H20NOP, 3-Methyl-5-((triphenylphosphoranylidene)methyl)isoxazole contains a steroid core, an amide group, organophosphorus functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 357.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Methyl-5-((triphenylphosphoranylidene)methyl)isoxazole 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 | C23H20NOP |
| Molecular Weight | 357.38 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- 3-(Triphenylphosphoranylidene)dihydrofuran-2,5-dione (CAS 906-65-0)
- 2605-67-6 Methyl (triphenylphosphoranylidene)acetate Acetic acid, 2-(triphenylphosphoranylidene)-, methyl ester Acetic acid, (triphenylphosphoranylidene)-, methyl ester (Carbomethoxymethylene)triphenylphosphorane EINECS 220-018-4 ((Methoxycarbonyl)methylene)triphenylphosphorane Methyl triphenylphosphoranylideneacetate NSC 117573 NSC 407395 Triphenyl(carbomethoxymethylene)phosphorane (Triphenylphosphoranylidene)acetic acid methyl ester (CAS 2605-67-6)
- 3-Oxo-2-(triphenylphosphoranylidene)butanoic acid (CAS 184000-45-1)
- Ethyl (triphenylphosphoranylidene)carbamate (CAS 17437-51-3)
- Methyl 3-(triphenylphosphoranylidene)propanoate (CAS 40955-14-4)
- 1-(Triphenylphosphoranylidene)pentan-2-one (CAS 17615-01-9)
- 3-Methyl-1-(triphenylphosphoranylidene)butan-2-one (CAS 19753-67-4)
- 2-Methyl-4-(triphenylphosphoranylidene)oxazole-5(4H)-thione (CAS 76621-59-5)
Recommended Standards
- N-(3-Nitro-2-pyridinesulfenyl)-L-glutamic acid γ-t-butyl ester (CAS 108312-25-0)
- 5-Nitrobenzo[c][1,2,5]selenadiazole (CAS 1128-90-1)
- N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)pentanamide (CAS 1040661-95-7)
- Methyl (2S,4R)-1-Cbz-4-[(methylsulfonyl)oxy]pyrrolidine-2-carboxylate (CAS 117811-78-6)
- 3-(2,5-Dimethoxyphenyl)-4-methyl-2-oxo-2H-chromen-7-yl dimethylcarbamate (CAS 859668-98-7)
- Benzoin Hemisuccinate (CAS 24248-42-8)
- [1-(2,2-Difluoroethyl)cyclobutyl]methanol (CAS 2024104-93-4)
- 2-(2-(4-Fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl)acetic acid (CAS 1338670-00-0)
- Ethyl 2-(3,4-dichlorophenyl)-2-(methylamino)propanoate (CAS 1184272-89-6)
- Ethyl 5-amino-2-fluoropyridine-4-carboxylate (CAS 1260742-34-4)
- Methyl 3-(bromomethyl)-5-fluorobenzoate (CAS 816449-87-3)
- 2-((2,6-Dichlorobenzyl)thio)acetohydrazide (CAS 263366-99-0)
- ethyl 2-acetyl-4-cyclopropyl-4-oxobutanoate (CAS 2044713-51-9)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
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