34303-18-9 Phosphine oxide, (4-chlorophenyl)diphenyl- DTXSID60457738 CAS 34303-18-9
| CAS No. | 34303-18-9 |
| Molecular Formula | C18H14ClOP |
| Molecular Weight | 312.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 312.73 g/mol gives 34303-18-9 Phosphine oxide, (4-chlorophenyl)diphenyl- DTXSID60457738 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
34303-18-9 Phosphine oxide, (4-chlorophenyl)diphenyl- DTXSID60457738 (CAS 34303-18-9), molecular formula C18H14ClOP and molecular weight 312.73 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 34303-18-9 Phosphine oxide, (4-chlorophenyl)diphenyl- DTXSID60457738 (C18H14ClOP) contains a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.5, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 312.73 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.
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), 34303-18-9 Phosphine oxide, (4-chlorophenyl)diphenyl- DTXSID60457738 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 | C18H14ClOP |
| Molecular Weight | 312.73 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
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- Phosphine (CAS 7803-51-2)
- Phosphine, 1,1′-[(1R)-2,2′,3,3′-tetrahydro-3,3,3′,3′,5,5′-hexamethyl-1,1′-spirobi[1H-indene]-7,7′-diyl]bis[1,1-diphenyl- (CAS 2213471-14-6)
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Recommended Standards
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- VU 0360172 (CAS 1309976-62-2)
- (4-Cyclopropoxyphenyl)methanesulfonyl Chloride (CAS 1394934-98-5)
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- 2,6-Diphenylimidazo[1,2-b]pyridazine (CAS 65610-30-2)
- 5-(Benzyloxy)pyrimidin-4-amine (CAS 92289-50-4)
- 4-Hydroxyimino-1-methanesulfonyl-pyrrolidine-3-carboxylic acid ethyl ester (CAS 1421312-65-3)
- n-[(1-hydroxycyclopentyl)methyl]acetamide (CAS 51004-22-9)
- Semaglutide Impurity 152 xTFA (CAS CATO-C4X-2226152)
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