Ethyl 2-imino-5-oxo-1-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxylate CAS 371923-25-0
| CAS No. | 371923-25-0 |
| Molecular Formula | C20H17N5O3 |
| Molecular Weight | 375.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 2-imino-5-oxo-1-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxylate 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.
Ethyl 2-imino-5-oxo-1-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxylate (CAS 371923-25-0), molecular formula C20H17N5O3 and molecular weight 375.38 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 2-imino-5-oxo-1-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxylate (C20H17N5O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 375.38 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H17N5O3 |
| Molecular Weight | 375.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
Related Ethyl Standards
- Methyl 2-imino-10-methyl-5-oxo-1-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxylate (CAS 370869-55-9)
- 1-(3-Benzyl-2-imino-2,3-dihydro-1H-benzo[d]imidazol-1-yl)-3-phenoxypropan-2-ol (CAS 292639-66-8)
- 2-Imino-N,1-bis(2-methoxyethyl)-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide (CAS 371237-13-7)
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- 2-((4-Imino-6,7-dimethoxy-3-(3-methoxypropyl)-3,4-dihydroquinazolin-2-yl)thio)acetic acid (CAS 439096-37-4)
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