Hydrocortisone Impurity 28 CAS CATO-C4X-140128
| CAS No. | CATO-C4X-140128 |
| Molecular Formula | C25H32O6 |
| Molecular Weight | 428.52 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 428.52 g/mol gives Hydrocortisone Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Hydrocortisone Impurity 28 (CAS CATO-C4X-140128) is a certified pharmaceutical impurity reference standard with the molecular formula C25H32O6 and a molecular weight of 428.52 g/mol.
Based on its molecular formula C25H32O6, Hydrocortisone Impurity 28 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 428.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C25H32O6 |
| Molecular Weight | 428.52 g/mol |
| Appearance | Pale yellow to 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Hydrocortisone Standards
- Hydrocortisone Impurity 43 (CAS 7780-63-4)
- Hydrocortisone Impurity 24 (CAS CATO-C4X-140124)
- Hydrocortisone 21-Butyrate (CAS 6677-99-2)
- Hydrocortisone Impurity 58 (CAS CATO-C4X-140158)
- Hydrocortisone Butyrate (CAS 13609-67-1)
- Hydrocortisone Impurity 70 (CAS 116816-20-7)
- Hydrocortisone 17-Propionate (CAS 65980-97-4)
- Hydrocortisone 21-Propionate (CAS 6677-98-1)
Recommended Standards
- Budesonide EP Impurity E (CAS 131918-64-4)
- Budesonide EP Impurity D (Mixture of Epimer) (CAS 85234-63-5)
- Reserpine Impurity 4 (CAS 1178-28-5)
- Budesonide EP Impurity L (Mixture of Epimer) (CAS 216453-74-6)
- Terbutaline impurity 123 (CAS CATO-C4X-1183123)
- Phytomenadione/Vitamin K1 Impurity 98 (CAS CATO-C4X-220798)
- Verapamil Impurity 8（Verapamil EP Impurity H） (CAS 190850-49-8)
- 5-Chloro-2,7-dimethylquinoline (CAS 1378260-82-2)
- (2-Amino-3-thienyl)(2-fluorophenyl)methanone (CAS 40017-70-7)
- 1-(5-(Chloromethyl)-1,2,4-oxadiazol-3-yl)-N,N-dimethylmethanamine (CAS 1209729-06-5)
- 3-amino-6,6-dimethylcyclohex-2-en-1-one (CAS 24068-46-0)
- Methyl 4-(4-hydroxyphenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 314052-39-6)
- 3-Bromomethyl-6-fluoro-2-(trifluoromethyl)pyridine (CAS 1227502-05-7)
- Biotinyl-Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 1816258-36-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com