Tiamulin impurity 13 CAS 1061337-55-0
| CAS No. | 1061337-55-0 |
| Molecular Formula | C28H45NO5S |
| Molecular Weight | 507.73 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 507.73 g/mol gives Tiamulin impurity 13 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Tiamulin impurity 13 (CAS 1061337-55-0), a pharmacopoeial impurity reference standard (molecular formula C28H45NO5S, MW 507.73 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Tiamulin impurity 13 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 507.73 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 | C28H45NO5S |
| Molecular Weight | 507.73 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Tiamulin Standards
- Tiamulin - Impurity P (CAS 848129-54-4)
- Tiamulin EP impurity D (CAS CATO-C4X-221016)
- Tiamulin EP impurity Q (CAS CATO-C4X-221017)
- Tiamulin impurity 23 (CAS CATO-C4X-221023)
- Tiamulin (CAS 55297-95-5)
- Tiamulin EP Impurity E (CAS 113323-39-0)
- Tiamulin EP Impurity L (CAS 31716-01-5)
- Tiamulin EP Impurity S (CAS CATO-C4X-22104)
Recommended Standards
- N-[(1R,2R)-2-(Dimethylamino)cyclohexyl]-N'-[(8α,9S)-6'-methoxycinchonan-9-yl]thiourea (CAS 1101846-75-6)
- Lefamulinum Impurity 23 (CAS CATO-C4X-304723)
- (4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)piperazin-1-yl)(3-(2,6-dichlorophenyl)-4,5-dihydroisoxazol-5-yl)methanone (CAS 477848-50-3)
- Lefamulinum Impurity 43 (CAS CATO-C4X-304743)
- Ribociclib Impurity 11 (CAS CATO-C4X-310011)
- Iohexol impurity 44 (CAS CATO-C4X-166444)
- N-Acetyl Mesalazine-d3 Impurity 2 (CAS 93968-79-7)
- (R)-2-amino-2-(2-fluorophenyl)propan-1-ol (CAS 1213310-23-6)
- (2S,4S)-4-Nitrobenzyl 4-(acetylthio)-2-(((tert-butoxycarbonyl)(sulfamoyl)amino)methyl)pyrrolidine-1-carboxylate (CAS 491878-06-9)
- N-(Furan-3-ylmethyl)-N-(thiophen-2-ylmethyl)thiophene-2-carboxamide (CAS 1798023-93-4)
- 4-Bromo-2-(trifluoromethyl)phenylisocyanate (CAS 186589-12-8)
- N,N-Diethyl-5,6-dihydrospiro[imidazo[2,1-c][1,4]oxazine-8,4'-piperidine]-6-carboxamide (CAS 1422133-76-3)
- 1-(1-Cyclopentyl-3-methyl-1H-pyrazol-4-yl)-N-((1-ethyl-1H-pyrazol-4-yl)methyl)methanamine hydrochloride (CAS 1856095-18-5)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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