1-(4,6-Dimethyl-3-(1H-pyrrol-1-yl)thieno[2,3-b]pyridin-2-yl)-3-(o-tolyl)urea CAS 672950-56-0
| CAS No. | 672950-56-0 |
| Molecular Formula | C21H20N4OS |
| Molecular Weight | 376.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1-(4,6-Dimethyl-3-(1H-pyrrol-1-yl)thieno[2,3-b]pyridin-2-yl)-3-(o-tolyl)urea (C21H20N4OS) is characterized by a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
1-(4,6-Dimethyl-3-(1H-pyrrol-1-yl)thieno[2,3-b]pyridin-2-yl)-3-(o-tolyl)urea (CAS 672950-56-0) is a high-purity analytical reference standard with the molecular formula C21H20N4OS and a molecular weight of 376.47 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1-(4,6-Dimethyl-3-(1H-pyrrol-1-yl)thieno[2,3-b]pyridin-2-yl)-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.
Physical & Chemical Properties
| Molecular Formula | C21H20N4OS |
| Molecular Weight | 376.47 g/mol |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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