Selexipag Impurity 31 CAS CATO-C4X-196131
| CAS No. | CATO-C4X-196131 |
| Molecular Formula | C27H29N5O2 |
| Molecular Weight | 455.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 455.55 g/mol gives Selexipag Impurity 31 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Selexipag Impurity 31 (CAS CATO-C4X-196131, C27H29N5O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Selexipag Impurity 31 (C27H29N5O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 455.55 g/mol, it falls into the moderately-high-molecular-weight range. 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 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.
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 | C27H29N5O2 |
| Molecular Weight | 455.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Related Selexipag Standards
- Selexipag Impurity 26 (CAS CATO-C4X-196126)
- Selexipag RC 3 (CAS 2514706-51-3)
- Selexipag Impurity 54 (CAS CATO-C4X-196154)
- Selexipag Impurity 59 (CAS CATO-C4X-196159)
- Selexipag Impurity 62 (CAS CATO-C4X-196162)
- Selexipag Impurity 5 (CAS 2287345-22-4)
- Selexipag Impurity 4 (CAS 2732400-56-3)
- Selexipag Impurity 6 (CAS 475084-96-9)
Recommended Standards
- Terbutaline Impurity 77 (CAS CATO-C4X-118377)
- Alectinib Impurity 15 (CAS 1256584-81-2)
- N-(2-(5-(4-Methoxyphenyl)-1-(thiophene-2-carbonyl)-4,5-dihydro-1H-pyrazol-3-yl)phenyl)methanesulfonamide (CAS 923193-09-3)
- MK-0812 (CAS 624733-88-6)
- Landiolol Impurity 63 (CAS CATO-C4X-263163)
- Tapentadol Impurity 19 (CAS CATO-C4X-209919)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
- 2-Propanamido-n-(pyridin-2-yl)benzamide (CAS 915915-55-8)
- Afatinib Impurity 33 (CAS CATO-C4X-100633)
- 2-Bromo-5-(2-ethylhexyl)thiophene (CAS 925899-21-4)
- (+/-)-cis-3-Aminononanoic acid hydrochloride (CAS 1158308-30-5)
- 5-Bromo-1-(cyanomethyl)-1H-pyrazole-4-carbonitrile (CAS 1823407-59-5)
- 2-Bromo-5-methoxy-4-methylbenzoic acid (CAS 61809-40-3)
- a2,3-Sialylglycopeptide (CAS 189035-43-6)
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