Budesonide Impurity 01 CAS 1188271-73-9
| CAS No. | 1188271-73-9 |
| Molecular Formula | C21H26O6 |
| Molecular Weight | 374.43 g/mol |
| 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 01.
CATO supplies Budesonide Impurity 01 (CAS 1188271-73-9), a pharmacopoeial impurity reference standard (molecular formula C21H26O6, MW 374.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Budesonide Impurity 01 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 374.43 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C21H26O6 |
| Molecular Weight | 374.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
Related Budesonide Standards
- Budesonide Impurity 33 (CAS 131918-73-5)
- Budesonide Impurity N20 (CAS 3754-05-0)
- Budesonide EP Impurity A (CAS 13951-70-7)
- Budesonide Impurity 35 (CAS 3079028-41-1)
- Budesonide impurity 41 (CAS CATO-C4X-138941)
- Budesonide impurity 59 (CAS 34647-56-8)
- Budesonide Impurity 80 (CAS CATO-C4X-138980)
- Budesonide Impurity 34 (CAS 1171-81-9)
Recommended Standards
- (5-Benzenesulfonyl-2-phenyl-3H-imidazol-4-ylsulfanyl)-acetic acid (CAS 1171935-29-7)
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- tert-Butyl 4-{[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}piperazine-1-carboxylate (CAS 1170943-40-4)
- 4-chloropyridine-2,5-diamine (CAS 1260803-26-6)
- Finerenone Impurity 140 (CAS CATO-C4X-2880140)
- Metaraminol Impurity 14 HCl (CAS 2277270-00-3)
- Cefaclor Impurity 65 (CAS CATO-C4X-127065)
- 1-{1-[(tert-butoxy)carbonyl]piperidin-4-yl}-5-methyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 1240527-75-6)
- 2-(2,3-Dimethylphenoxy)butanoyl chloride (CAS 833460-84-7)
- Avanafil Impurity 19 (CAS 2250242-12-5)
- 90134-00-2 1-(3-Sulfonatopropyl)-4-(beta)(2-(di-n-butylamino)-6-naphthylvinyl)pyridinium betaine Pyridinium, 4-(2-(6-(dibutylamino)-2-naphthalenyl)ethenyl)-1-(3-sulfopropyl)-, hydroxide, inner salt di-4-Anepps (CAS 90134-00-2)
- 7-Amino-2-methylbenzothiazole (CAS 5036-87-3)
- 2-((4,6-Bis(2-(2-methoxybenzylidene)hydrazinyl)-1,3,5-triazin-2-yl)oxy)acetonitrile (CAS 137522-85-1)
- Smac-N7 Peptide (CAS 401913-57-3)
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