Insulin Degludec Impurity 28 CAS CATO-C4X-215728
| CAS No. | CATO-C4X-215728 |
| Molecular Formula | C29H53NO7 |
| Molecular Weight | 527.73 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 527.73 g/mol gives Insulin Degludec Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Insulin Degludec Impurity 28 (CAS CATO-C4X-215728) is a certified pharmaceutical impurity reference standard with the molecular formula C29H53NO7 and a molecular weight of 527.73 g/mol.
Insulin Degludec Impurity 28 (C29H53NO7) contains a nitrogen-containing heterocyclic scaffold, an amide 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 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.
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 | C29H53NO7 |
| Molecular Weight | 527.73 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Insulin Standards
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
- Insulin B (22-25) (CAS 34367-73-2)
- Insulin Degludec Impurity 16 (CAS CATO-C4X-215716)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
- Insulin Degludec Impurity 15 (CAS CATO-C4X-215715)
- Insulin Degludec Impurity 19 (CAS CATO-C4X-215719)
Recommended Standards
- (1R,2S,5S)-3-((S)-2-(3-(1-(tert-butylsulfonylmethyl)cyclohexyl)ureido)-3,3-dimethylbutanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid (CAS 1229337-32-9)
- 5-(2-(1-Ethylnaphtho[1,2-d]thiazol-2(1H)-ylidene)ethylidene)-3-heptyl-1-phenyl-2-thioxoimidazolidin-4-one (CAS 15664-19-4)
- Abrocitinib Impurity 45 (CAS CATO-C4X-288445)
- (S)-2-((S)-3-(1H-Indol-3-yl)-2-tetradecanamidopropanamido)-4-methylpentanoic acid (CAS 192722-67-1)
- Ivabradine Impurity 61 HCl (CAS 304465-03-0(Free Base))
- Vaborbactam Impurity 9 (CAS CATO-C4X-34779)
- Clonazepam impurity 7 (CAS CATO-C4X-14037)
- Dichloro[2-(4,5-dihydro-2-oxazolyl)quinoline]palladium(II) (CAS 1150097-98-5)
- 2-(2-([1,1'-Biphenyl]-4-yl)ethyl)benzaldehyde (CAS 1379004-93-9)
- tert-Butyl ((1-(2-aminoethyl)piperidin-2-yl)methyl)carbamate (CAS 1353975-58-2)
- Cefotiam Impurity 19 (CAS CATO-C4X-120419)
- 5-Bromo-7-chloroindole-2-carboxylic Acid (CAS 383132-31-8)
- 5-Bromo-N-(2-chloroethyl)thiophene-2-sulfonamide (CAS 1082843-83-1)
- 69558-55-0 O3Y80ZF13F Thymopentin Thymopentin [USAN:INN:BAN] L-Tyrosine, N-(N-(N-(N2-L-arginyl-L-lysyl)-L-alpha-aspartyl)-L-valyl)- L-Tyrosine, N-(N-(N-(N(sup 2)-L-arginyl-L-lysyl)-L-alpha-aspartyl)-L-valyl)- Thymopentine [French] Thymopentinum [Latin] Timopentina [Spanish] Thymopoietin 32-36 TP-5 Thymopoietin pentapeptide ORF-15244 Thymopentine Thymopentinum Timopentina ORF 15244 UNII-O3Y80ZF13F (CAS 69558-55-0)
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