Apremilast Impurity 55 CAS 885268-06-4
| CAS No. | 885268-06-4 |
| Molecular Formula | C12H19NO4S |
| Molecular Weight | 273.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Apremilast Impurity 55 (CAS 885268-06-4) is a certified pharmaceutical impurity reference standard with the molecular formula C12H19NO4S and a molecular weight of 273.35 g/mol.
Based on its molecular formula C12H19NO4S, Apremilast Impurity 55 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 273.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H19NO4S |
| Molecular Weight | 273.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Apremilast Standards
- Apremilast impurity 14 (CAS 253168-94-4)
- Apremilast Impurity 25 (CAS 608142-27-4)
- Apremilast Impurity 73 (CAS CATO-C4X-100973)
- Apremilast Impurity 74 (CAS CATO-C4X-100974)
- Apremilast Impurity 79 (CAS 608141-42-0)
- Apremilast Impurity 40 (CAS 2055542-18-0)
- Apremilast Impurity 131 (CAS CATO-C4X-1009131)
- Apremilast Impurity 48 (CAS 1450657-28-9)
Recommended Standards
- 63547-44-4 2-[(Diphenylmethyl)sulfanyl]-N-hydroxyacetamide DTXSID60628168 (CAS 63547-44-4)
- N-methyl-2-(2-(naphthalen-1-yl)acetyl)hydrazine-1-carbothioamide (CAS 51291-27-1)
- Etoricoxib Impurity 14 (CAS 307531-95-9)
- N-Allyl-N-(3-methyl-1,2,4-thiadiazol-5-yl)-2-phenylacetamide (CAS 62347-34-6)
- Capivasertib Impurity 29 (CAS CATO-C4X-331229)
- Mesalazine Impurity 50 (CAS CATO-C4X-132450)
- Rifampicin Impurity 14 (CAS CATO-C4X-145614)
- 1-Benzyl-6-methylpyridine-2,4(1H,3H)-dione (CAS 1158785-09-1)
- 2-(2-Chlorophenyl)-1-phenyl-1H-benzo[d]imidazole (CAS 57492-47-4)
- N-Desethyl Acetildenafil (CAS 147676-55-9)
- N-Boc-N-[2-(Boc-amino)ethyl]glycine (CAS 70889-73-5)
- 3-(Ethyl((1-ethyl-3,5-dimethyl-1h-pyrazol-4-yl)methyl)carbamoyl)-1-methyl-1h-pyrazole-4-carboxylic acid (CAS 1006492-55-2)
- tert-butyl (3S,4R)-3-azido-4-fluoro-pyrrolidine-1-carboxylate (CAS 913743-09-6)
- Semaglutide Impurity 125 xTFA Salt (CAS CATO-C4X-2226125)
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