474922-90-2 18:1 PEG5000 PE CAS 474922-90-2
| CAS No. | 474922-90-2 |
| Molecular Formula | C133H259NO55P |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 2801.50 g/mol gives 474922-90-2 18:1 PEG5000 PE distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 474922-90-2 18:1 PEG5000 PE (CAS 474922-90-2), a certified reference material (molecular formula C133H259NO55PH4N, MW 2801.50 g/mol) for analytical method development and quality control.
The molecular framework of 474922-90-2 18:1 PEG5000 PE (C133H259NO55PH4N) is characterized by an amide group, a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C133H259NO55P H4N |
| Molecular Weight | 2801.50 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Sodium Hexadecanoate-16,16,16-d3 (CAS 347841-37-6)
- 4-(4-Hydroxyphenyl)-4-oxobut-2-enoic acid (CAS 24849-48-7)
- 2-chlorofuro[2,3-d]pyrimidine-6-carboxylic acid (CAS 1541368-88-0)
- Methyl N-(3-chloro-2-methylphenyl)-N-tosylglycinate (CAS 425413-10-1)
- 2-(4-(Tert-butoxycarbonyl)piperazin-1-yl)-2-(pyridin-4-yl)acetic acid (CAS 885274-54-4)
- Methyl 1-methyl-4-phenyl-1,4-dihydropyridine-3-carboxylate (CAS 219786-85-3)
- 2-((N-(2,4-dichloro-5-methoxyphenyl)-4-fluorophenyl)sulfonamido)-N-methylacetamide (CAS 338967-33-2)
- Rimegepant Impurity 64 (CAS CATO-C4X-248764)
- 4,5-dimethyl-1H-imidazole-2-carbonitrile (CAS 1238058-12-2)
- [D-His1]-Semaglutide (CAS CATO-C4X-2226127)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com