Phenylbutyrate Impurity 16 CAS CATO-C4X-258316
| CAS No. | CATO-C4X-258316 |
| Molecular Formula | C13H18O4 |
| Molecular Weight | 238.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Phenylbutyrate Impurity 16 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.
Phenylbutyrate Impurity 16 (CAS CATO-C4X-258316) is a certified pharmaceutical impurity reference standard with the molecular formula C13H18O4 and a molecular weight of 238.28 g/mol.
Phenylbutyrate Impurity 16 (C13H18O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C13H18O4 |
| Molecular Weight | 238.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | N/A |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Phenylbutyrate Standards
- Phenylbutyrate Impurity 5 (CAS 1443417-17-1)
- Phenylbutyrate Impurity 6 (CAS 1292210-87-7)
- Phenylbutyrate Impurity 9 (CAS 54698-75-8)
- Phenylbutyrate Impurity 14 (CAS 358349-85-6)
- Ethyl 4-Phenylbutyrate (CAS 10031-93-3)
- Sodium Phenylbutyrate (CAS 1716-12-7)
- Phenylbutyrate EP Impurity A (CAS 2051-95-8)
- Phenylbutyrate (Acid) (CAS 1821-12-1)
Recommended Standards
- Drotaverin Impurity 64 (CAS CATO-C4X-243564)
- Drotaverine Impurity 12 (CAS 92157-09-0)
- Vitamin K1 Impurity 71 (CAS 2457204-51-0)
- Mirogabalin Impurity 116 (CAS CATO-C4X-2924116)
- Empagliflozin impurity 181 (CAS 2452301-36-7)
- Fluoxetine Impurity 03 (CAS 83554-67-0)
- Argatroban Impurity 3 (CAS 20668-20-6)
- Ethyl 2-(ethylimino)-4-(trifluoromethyl)-2,3-dihydrothiazole-5-carboxylate (CAS 937597-94-9)
- 3-Methyl-1-((E)-4-phenyl-but-3-enyl)-piperazine hydrochloride (CAS 1353991-00-0)
- 7-Fluoro-4-hydroxyquinoline-3-carboxylic acid (CAS 63463-20-7)
- 1,2,3,5,8-Pentachloronaphthalene (CAS 150224-24-1)
- 2,2-Difluoro-2-(4-(methylsulfonyl)phenyl)acetic acid (CAS 1785171-44-9)
- Tert-butyl (2-(4-(methylcarbamoyl)quinolin-8-yl)allyl)carbamate (CAS 1476076-34-2)
- Des-Ser39-Tirzepatide (CAS CATO-CPTD788936)
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