Fospropofol Impurity 7 CAS 250345-80-3
| CAS No. | 250345-80-3 |
| Molecular Formula | C12H17O4P |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Fospropofol Impurity 7 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.
CATO supplies Fospropofol Impurity 7 (CAS 250345-80-3), a pharmacopoeial impurity reference standard (molecular formula C12H17O4PNa, MW 279.23 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Fospropofol Impurity 7 (C12H17O4PNa) contains a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.5, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 279.23 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C12H17O4P 2*Na |
| Molecular Weight | 279.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Fospropofol Standards
- Fospropofol Impurity 1 (CAS 1236543-19-3)
- Fospropofol Impurity 2 (CAS 18351-26-3)
- Fospropofol Impurity 9 Na Salt (CAS 250345-81-4)
- Fospropofol Disodium Salt (CAS 258516-87-9)
- Fospropofol (CAS 258516-89-1)
- Fospropofol Impurity 4 (CAS CATO-C4X-31514)
- Fospropofol Impurity 5 (CAS CATO-C4X-31515)
- Fospropofol impurity 6 (CAS CATO-C4X-31516)
Recommended Standards
- Ciprofloxacin EP Impurity B (CAS 93107-11-0)
- Simvastatin EP Impurity N (Mixture of Diastereomers) (CAS 774611-54-0)
- Rivaroxaban Impurity 120 (CAS CATO-C4X-1090120)
- 3-Amino-2-hydroxybenzenesulfonic acid (CAS 80-79-5)
- 2-Chloro-1-(pyrimidin-5-yl)ethan-1-one (CAS 1567850-33-2)
- N,N'-Diphenyl-N,N'-di(p-tolyl)benzidine (CAS 20441-06-9)
- [D-Ser4] Triptorelin (CAS CATO-C4X-18622)
- 4-(2-Aminoethyl)piperazine-1-carboxylic acid (CAS 91441-53-1)
- 5-Mercaptoquinoline-8-sulfonic acid (CAS 60999-28-2)
- D-Ala21-Tirzepatide (CAS CATO-CPTD788913)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com