Apremilast Impurity 35 CAS 253168-83-1
| CAS No. | 253168-83-1 |
| Molecular Formula | C20H21NO6S |
| Molecular Weight | 403.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Apremilast Impurity 35 (CAS 253168-83-1), a certified reference material (molecular formula C20H21NO6S, MW 403.45 g/mol) for analytical method development and quality control.
Apremilast Impurity 35 (C20H21NO6S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H21NO6S |
| Molecular Weight | 403.45 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Apremilast Standards
- Apremilast Impurity 54 (CAS CATO-C4X-100954)
- Apremilast impurity 19 (CAS 1384440-16-7)
- Apremilast Impurity 39 (CAS CATO-C4X-100939)
- Apremilast impurity 18 (CAS 1384439-79-5)
- Apremilast Impurity 2 (CAS 635705-72-5)
- Apremilast Impurity 99 (CAS CATO-C4X-100999)
- Apremilast Impurity 117 (CAS CATO-C4X-1009117)
- Apremilast Impurity 37 (CAS 1407140-51-5)
Recommended Standards
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- 4-[(Benzenesulfonyl)methyl]-6-phenoxy-2-(pyridin-2-yl)pyrimidine (CAS 303147-08-2)
- n-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1h-pyrazol-4-yl)-2,5-dimethoxybenzenesulfonamide (CAS 725215-60-1)
- 1-(4-Bromo-2-(methoxymethyl)phenyl)-2-methylpiperidine (CAS 1141474-35-2)
- 5-Bromo-1-(phenylsulfonyl)-1H-pyrrolo[3,2-b]pyridine (CAS 1227268-74-7)
- (5-Amino-2-(pyridin-3-yl)-1,3-dioxan-5-yl)methanol (CAS 341957-83-3)
- Chloro(2-chloroethyl)dimethylsilane (CAS 44519-64-4)
- Methyl 6-(thiophen-2-yl)nicotinate (CAS 179408-53-8)
- 2-Amino-N-methyl-3-phenyl-N-((tetrahydro-2H-pyran-4-yl)methyl)propanamide hydrochloride (CAS 1236262-89-7)
- [(1S)-3,3-Difluorocyclopentyl]methanamine (CAS 1408057-46-4)
- 4-Bromo-6-chlorobenzo[d]thiazole-2-thiol (CAS 1215205-90-5)
- 2-(1-Piperidinyl)benzyl Alcohol (CAS 87066-94-2)
- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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