Dihydro Ergotamine Impurity 4 CAS 511-12-6
| CAS No. | 511-12-6 |
| Molecular Formula | C33H37N5O5 |
| Molecular Weight | 583.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Dihydro Ergotamine Impurity 4 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.
Dihydro Ergotamine Impurity 4 (CAS 511-12-6), molecular formula C33H37N5O5 and molecular weight 583.68 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Dihydro Ergotamine Impurity 4 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 583.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C33H37N5O5 |
| Molecular Weight | 583.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 5 |
Related Dihydro Standards
- Dihydro Ergotamine Impurity 8 (CAS 91653-37-1)
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- Tert-butyl 3-((thietan-3-ylamino)methyl)pyrrolidine-1-carboxylate (CAS 2008345-55-7)
- 1-(2,6-Difluorobenzyl)-1h-imidazol-2-amine (CAS 1183183-91-6)
- 2-(4-Nitro-2-(trifluoromethyl)phenyl)acetic acid (CAS 199469-91-5)
- N-(3-Methylbenzyl)pyridazin-3-amine (CAS 1249503-33-0)
- (2R,3R)-3-(Boc-amino)-3-(4-chlorophenyl)-2-methylpropanoic Acid (CAS 1217443-77-0)
- 1,3,5-Trichloro-2-propoxybenzene (CAS 1881322-19-5)
- Insulin Detemir (CAS 169148-63-4)
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