Methylergometrine Impurity 7 CAS CATO-C4X-19487
| CAS No. | CATO-C4X-19487 |
| Molecular Formula | C20H25N3O3 |
| Molecular Weight | 355.43 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 Methylergometrine Impurity 7.
CATO supplies Methylergometrine Impurity 7 (CAS CATO-C4X-19487), a pharmacopoeial impurity reference standard (molecular formula C20H25N3O3, MW 355.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Methylergometrine Impurity 7 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 355.43 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 | C20H25N3O3 |
| Molecular Weight | 355.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Methylergometrine Standards
- Methylergometrine Impurity 6 (CAS CATO-C4X-19486)
- Methylergometrine (CAS 113-42-8)
- Methylergometrine EP Impurity G (CAS 5793-04-4)
- Methylergometrine Impurity 1 (CAS 5516-91-6)
- Methylergometrine EP Impurity C (CAS 478-94-4)
- Methylergometrine Impurity 13 (CAS 569-26-6)
- Methylergometrine EP Impurity I Acetate (CAS 724767-21-9 (free base))
Recommended Standards
- Tetrahydropalmatine (CAS 2934-97-6)
- Teneligliptin Impurity 9 (CAS 2407632-38-4)
- D-Tetrahydropalmatine (CAS 3520-14-7)
- Pazopanib Impurity 28 (CAS 1072836-76-0)
- Rocuronium Bromide Impurity 47 (CAS CATO-C4X-124247)
- Upadacitinib Impurity 7 (CAS CATO-C4X-24057)
- N-Nitroso Piperacillin impurity 100 (CAS CATO-C4X-1732100)
- 5-Fluoro-[2,3'-bipyridine]-5'-carbaldehyde (CAS 1346686-92-7)
- 4,5,6,7-Tetrahydro-1H-indazol-4-amine (CAS 927803-63-2)
- Sitagliptin Impurity 149 (CAS CATO-C4X-1144149)
- N-((4-(Piperidin-1-yl)pyrimidin-2-yl)methyl)thiophene-2-sulfonamide (CAS 1797223-22-3)
- 2-methyl-2H-indazole-4-carbaldehyde (CAS 1079992-61-2)
- 7-chloro-3-(4-chlorophenyl)-2-mercaptoquinazolin-4(3H)-one (CAS 118449-37-9)
- Semaglutide impurity 95 (CAS CATO-C4X-222695)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com