Maribavir Impurity 21 CAS 217951-74-1
| CAS No. | 217951-74-1 |
| Molecular Formula | C13H18O9 |
| Molecular Weight | 318.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Maribavir Impurity 21.
CATO supplies Maribavir Impurity 21 (CAS 217951-74-1), a pharmacopoeial impurity reference standard (molecular formula C13H18O9, MW 318.28 g/mol) used for the identification and quantification of trace impurities in APIs.
Maribavir Impurity 21 (C13H18O9) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Maribavir Impurity 21 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 | C13H18O9 |
| Molecular Weight | 318.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
Related Maribavir Standards
- Maribavir Impurity 20 (CAS CATO-C4X-300720)
- Maribavir Impurity 22 (CAS 123163-97-3)
- Maribavir Impurity 18 (CAS CATO-C4X-300718)
- Maribavir Impurity 12 (CAS CATO-C4X-300712)
- Maribavir Impurity 32 (CAS CATO-C4X-300732)
- Maribavir Impurity 30 (CAS CATO-C4X-300730)
- Maribavir Impurity 27 (CAS CATO-C4X-300727)
- Maribavir Impurity 26 (CAS 176161-47-0)
Recommended Standards
- Dantrolene-d4 (CAS 7261-97-4 (unlabeled))
- 1,2,3,5-Tetra-O-acetyl-D-ribofuranose (CAS 28708-32-9)
- Levodopa Impurity 15 (CAS 2323070-48-8)
- (2R,3R,4R,5R)-5-(Acetoxymethyl)tetrahydrofuran-2,3,4-triyl triacetate (CAS 50730-26-2)
- Rosuvastatin Impurity 171 (CAS CATO-C4X-1169171)
- Rosuvastatin Impurity 240 (CAS CATO-C4X-1169240)
- Atrasentan Impurity 121 (CAS 195708-08-8)
- Benzyl (2-(4-oxocyclohexyl)ethyl)carbamate (CAS 2098113-21-2)
- 1-(3-Methylbenzofuran-2-yl)ethanone (CAS 23911-56-0)
- Dracorhodin Perochlorate (CAS 125536-25-6)
- 3-Chloro-2-methylpyrido[2,3-b]pyrazine (CAS 1260519-71-8)
- 2-Fluoro-4-(pyrimidin-5-yl)benzoic acid (CAS 1248734-00-0)
- N-(4-methoxyphenyl)-9-methyl-5,6,7,9-tetrahydropyrazolo[3,4-b]pyrimido[4,5-d]azepin-2-amine (CAS 1242899-52-0)
- Insulin degludec (CAS 844439-96-9)
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