Budesonide Impurity 39 CAS 1436872-65-9
| CAS No. | 1436872-65-9 |
| Molecular Formula | C25H34O9S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Budesonide Impurity 39.
Budesonide Impurity 39 (CAS 1436872-65-9) is a certified pharmaceutical impurity reference standard with the molecular formula C25H34O9SC6H15N and a molecular weight of 611.79 g/mol.
Structurally, Budesonide Impurity 39 (C25H34O9SC6H15N) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 611.79 g/mol, it falls into the 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.
As a certified reference material (CRM), Budesonide Impurity 39 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C25H34O9S C6H15N |
| Molecular Weight | 611.79 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Budesonide Standards
- Budesonide EP Impurity B（Mixture of diastereomers） (CAS 1040085-98-0)
- Budesonide EP Impurity C (CAS 1040085-99-1)
- Budesonide Δ-6 Impurity (CAS 109458-75-5)
- Budesonide-d8 (Mixture of Diastereomers) (CAS 1105542-94-6)
- Budesonide Impurity 50 (CAS 111668-12-3)
- Budesonide d6 (CAS 1134189-63-1)
- Budesonide EP Impurity I (CAS 113930-13-5)
- Budesonide Impurity 34 (CAS 1171-81-9)
Recommended Standards
- Prochlorperazine Impurity 7 (CAS CATO-C4X-19667)
- Clindamycin Impurity 63 (CAS CATO-C4X-134163)
- Trazodone Impurity 92 (CAS CATO-C4X-177292)
- 2-(6-Methyl-1H-indazol-3-yl)ethanamine (CAS 1360892-54-1)
- Neodymium 146 (CAS 15411-67-3)
- 17-alpha-Ethynyl Estradiol-3-Sulfate (CAS 24560-70-1)
- 1,3-Bis((1H-benzo[d][1,2,3]triazol-1-yl)methyl)imidazolidine (CAS 129410-37-3)
- 2-(Benzo[d][1,3]dioxol-5-yl)thiazolidine-4-carboxylic acid (CAS 72678-96-7)
- (E)-(7-Hydroxyhept-1-en-1-yl)boronic acid (CAS 144446-57-1)
- Semaglutide impurity 103 (CAS 1446013-07-5)
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