(11bR)-4-Phenoxy-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin CAS 188055-47-2
| CAS No. | 188055-47-2 |
| Molecular Formula | C26H17O3P |
| Molecular Weight | 408.39 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.
(11bR)-4-Phenoxy-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin (CAS 188055-47-2), molecular formula C26H17O3P and molecular weight 408.39 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (11bR)-4-Phenoxy-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin (C26H17O3P) contains a steroid core, a phosphonate group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 18.5, corresponding to approximately 18 ring(s) or double-bond equivalent(s). With a molecular weight of 408.39 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C26H17O3P |
| Molecular Weight | 408.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 18.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
Related bR Standards
- (11bS)-4-Phenoxy-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin (CAS 256441-54-0)
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- 1-Phenoxy-3-(triphenyl-$l^{5}-phosphanylidene)propan-2-one (CAS 33502-03-3)
- 4-Phenoxy-N-[3-(2-phenoxyethoxy)benzyl]aniline (CAS 1040687-81-7)
- 2-Phenoxy-N-(2-(phenylsulfonyl)-2-(thiophen-2-yl)ethyl)acetamide (CAS 896332-63-1)
- 2-Phenoxy-1-(4-(4-(thiophen-3-yl)thiazol-2-yl)piperazin-1-yl)propan-1-one (CAS 1448074-93-8)
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Recommended Standards
- Ethyl 2-(2-ethyl-1-oxo-6-(((trifluoromethyl)sulfonyl)oxy)-1,2,3,4-tetrahydronaphthalen-2-yl)acetate (CAS 1414797-96-8)
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- 4-((4-(N-(2,6-Dimethoxypyrimidin-4-yl)sulfamoyl)phenyl)amino)-4-oxobut-2-enoic acid (CAS 329718-25-4)
- 2,3-Diphenyl-6-(pentafluorosulfanyl)quinoxaline (CAS 1379803-63-0)
- 2-(2-Bromophenyl)pyrimidin-4-amine (CAS 1248949-61-2)
- Ethyl 2-((tert-butoxycarbonyl)amino)-3-oxobutanoate (CAS 178200-66-3)
- 2-(Difluoromethyl)-3-fluoropyridine-4-carbonyl chloride (CAS 1805226-33-8)
- (R)-2-Amino-7,7,8-trimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (CAS 2673369-77-0)
- N-(tert-butoxycarbonyl)-N-methyl-L-alanyl-L-valine (CAS 876622-63-8)
- N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-((1-(4-fluorobenzyl)-1H-indol-3-yl)sulfonyl)acetamide (CAS 686744-12-7)
- 1-(2-Ethoxy-2-oxoethyl)pyridin-1-ium chloride (CAS 27032-03-7)
- Nickel, [N,N'-(1,2-dimethyl-1,2-ethanediylidene)bis[3-(diphenylphosphino-κP)-1-propanamine-κN]]- (CAS 1469910-16-4)
- 4-Methyl-N-(piperidin-4-yl)thiazol-2-amine dihydrochloride (CAS 1251923-02-0)
- Thymopoietin II Peptide Fragment (CAS 56795-64-3)
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