1-(3,4-Dihydro-2H-pyrrol-5-yl)-1-(m-tolyl)-3-(o-tolyl)urea CAS 905797-53-7
| CAS No. | 905797-53-7 |
| Molecular Formula | C19H21N3O |
| Molecular Weight | 307.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(3,4-Dihydro-2H-pyrrol-5-yl)-1-(m-tolyl)-3-(o-tolyl)urea 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.
1-(3,4-Dihydro-2H-pyrrol-5-yl)-1-(m-tolyl)-3-(o-tolyl)urea (CAS 905797-53-7), molecular formula C19H21N3O and molecular weight 307.39 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(3,4-Dihydro-2H-pyrrol-5-yl)-1-(m-tolyl)-3-(o-tolyl)urea (C19H21N3O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 307.39 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).
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 | C19H21N3O |
| Molecular Weight | 307.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Dihydro Standards
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Recommended Standards
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- 1'-Benzylspiro[chromane-2,4'-piperidin]-4-one (CAS 77264-89-2)
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- 4-(6-Hydroxyhexyloxy)phenol (CAS 142627-91-6)
- Pyrrolo[1,2-a]thieno[2,3-e]pyrazin-6-amine (CAS 106723-67-5)
- 5-Bromo-6-methoxypicolinamide (CAS 2055510-40-0)
- 2-Pivaloyl-1,2,3,4-tetrahydrobenzo[b][1,6]naphthyridine-10-carboxylic acid (CAS 887432-93-1)
- (1R,2S)-Ethyl 2-((tert-butoxycarbonyl)amino)cyclohexanecarboxylate (CAS 805994-98-3)
- Ethyl 2-(3-cyclopropyl-4-(difluoromethyl)-6-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl)acetate (CAS 1018050-81-1)
- 2-([(Benzyloxy)carbonyl](ethyl)amino)acetic acid (CAS 70732-64-8)
- [(3-Ethoxypyridin-2-yl)methyl]amine (CAS 1353867-96-5)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
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