Tiamulin impurity 19 CAS CATO-C4X-221019
| CAS No. | CATO-C4X-221019 |
| Molecular Formula | C20H30O2 |
| Molecular Weight | 302.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Tiamulin impurity 19 (CAS CATO-C4X-221019), a pharmacopoeial impurity reference standard (molecular formula C20H30O2, MW 302.45 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Tiamulin impurity 19 (C20H30O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 302.45 g/mol, it falls into the moderately-high-molecular-weight range. 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).
As a certified reference material (CRM), Tiamulin impurity 19 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 | C20H30O2 |
| Molecular Weight | 302.45 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Tiamulin Standards
- Tiamulin EP Impurity R (CAS 54225-72-8)
- Tiamulin impurity 22 (CAS 442681-88-1)
- Tiamulin EP Impurity C (CAS 589-32-2)
- Tiamulin impurity 10 (CAS CATO-C4X-221010)
- Tiamulin EP Impurity K (CAS 31716-11-7)
- Tiamulin EP Impurity J (CAS 31771-36-5)
- Tiamulin impurity 20 (CAS CATO-C4X-221020)
- Tiamulin impurity 12 (CAS CATO-C4X-221012)
Recommended Standards
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- Levonorgestrel EP Impurity Q (CAS 14507-49-4)
- Testosterone Impurity 66 (CAS 95369-50-9)
- Carbetocin Impurity 39 (CAS CATO-C4X-191139)
- Fluticasone Impurity 68 (CAS 1744-64-5)
- Parecoxib Impurity 38 (CAS CATO-C4X-159138)
- 1-(3-(4-Ethylphenyl)-1,2,4-oxadiazol-5-yl)ethan-1-amine (CAS 1082807-29-1)
- Hexanedioic acid, polymer with 1,2-ethanediol and 2,5-furandione, 2-ethylhexanoate (CAS 65970-51-6)
- 2-(4-Chlorophenyl)-2-(4-fluorophenyl)acetic acid (CAS 51535-39-8)
- 3-Ethyl-1-methyl-1H-imidazol-3-ium sodium sulfate (CAS 674282-83-8)
- 8-Methyl-1,4-dioxa-8-azaspiro[4.5]decane (CAS 28286-05-7)
- 2-Chloro-6-fluoro-3-formylphenylboronic acid (CAS 1451392-95-2)
- Semaglutide Impurity 165 (CAS CATO-C4X-2226165)
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