(R)-3-(tert-butyl)-4-(2,3,5,6-tetrahydrobenzo[1,2-b:5,4-b']difuran-8-yl)-2,3-dihydrobenzo[d][1,3]oxaphosphole CAS 1835717-07-1
| CAS No. | 1835717-07-1 |
| Molecular Formula | C21H23O3P |
| Molecular Weight | 354.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (R)-3-(tert-butyl)-4-(2,3,5,6-tetrahydrobenzo[1,2-b:5,4-b']difuran-8-yl)-2,3-dihydrobenzo[d][1,3]oxaphosphole is closely related to a steroid core, a phosphonate group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(R)-3-(tert-butyl)-4-(2,3,5,6-tetrahydrobenzo[1,2-b:5,4-b']difuran-8-yl)-2,3-dihydrobenzo[d][1,3]oxaphosphole (CAS 1835717-07-1), molecular formula C21H23O3P and molecular weight 354.38 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (R)-3-(tert-butyl)-4-(2,3,5,6-tetrahydrobenzo[1,2-b:5,4-b']difuran-8-yl)-2,3-dihydrobenzo[d][1,3]oxaphosphole (C21H23O3P) contains a steroid core, a phosphonate group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.5, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 354.38 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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), (R)-3-(tert-butyl)-4-(2,3,5,6-tetrahydrobenzo[1,2-b:5,4-b']difuran-8-yl)-2,3-dihydrobenzo[d][1,3]oxaphosphole 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 | C21H23O3P |
| Molecular Weight | 354.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
Recommended Standards
- 2′-(Diphenylphosphino)[1,1′-biphenyl]-2-ol (CAS 155566-51-1)
- Bis(4-phenylphenyl)phosphine oxide (CAS 187344-95-2)
- 4-[2-[(4-Methoxybenzoyl)amino]-5-thiazolyl]benzoic Acid (CAS 1361229-76-6)
- Ethyl 2-(3-nitrophenyl)-4-phenylthiazole-5-carboxylate (CAS 1965304-92-0)
- 4-Hydrazinylbenzenesulfonic acid hydrate (CAS 467450-48-2)
- 7,22,25-Stigmastatrienol (CAS 14485-48-4)
- 4-Bromopyridine-2,6-dicarbaldehyde (CAS 128184-01-0)
- tert-Butyl 2'-(((trifluoromethyl)sulfonyl)oxy)-5',6'-dihydrospiro[piperidine-4,4'-pyrrolo[1,2-b]pyrazole]-1-carboxylate (CAS 2751664-13-6)
- 3,7-Dimethylnona-2,6-dien-1-ol (CAS 41865-30-9)
- 4-[5-(oxolan-2-yl)-1,2,4-oxadiazol-3-yl]phenol (CAS 1152506-99-4)
- N-(2,5-Dimethoxyphenyl)-4-(trifluoromethyl)benzamide (CAS 723757-68-4)
- 2,3-Diphenyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 54214-70-9)
- 1,6-Diazaspiro[3.3]Heptan-2-one (CAS 1375304-04-3)
- Tirzepatide Impurity 46 (CAS CATO-C4X-324046)
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