Fospropofol Impurity 2 CAS 18351-26-3
| CAS No. | 18351-26-3 |
| Molecular Formula | C24H34O4P |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Fospropofol Impurity 2 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 2 (CAS 18351-26-3), a pharmacopoeial impurity reference standard (molecular formula C24H34O4PNa, MW 440.50 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C24H34O4PNa, Fospropofol Impurity 2 contains a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 440.50 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 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 | C24H34O4P Na |
| Molecular Weight | 440.50 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Fospropofol Standards
- Fospropofol Impurity 1 (CAS 1236543-19-3)
- Fospropofol Impurity 7 (CAS 250345-80-3)
- 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
- Fasudil Impurity 57 (CAS 146257-38-7)
- Ilaprazole Impurity 141 (CAS CATO-C4X-1130141)
- Melatonin impurity 17 (CAS 203442-77-7)
- 4-Bromo-1-ethynyl-2-(trifluoromethyl)benzene (CAS 2244085-78-5)
- 3-(4-Thiophen-2-yl-benzyl)-piperazin-2-one hydrochloride (CAS 1361111-28-5)
- tert-Butyl 7-methyl-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate (CAS 2384183-39-3)
- 2-(4-Hydroxyphenethyl)quinolin-8-ol (CAS 648896-76-8)
- (E)-3-(4-(Methoxycarbonyl)phenyl)acrylic acid (CAS 117390-07-5)
- L-trans-Epoxysuccinyl-Leu-3-methylbutylamide (CAS 76684-89-4)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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