2-(10-Oxo-3,4,5,10-tetrahydrobenzo[b][1,6]naphthyridin-2(1H)-yl)-N-(o-tolyl)acetamide CAS 1251616-51-9
| CAS No. | 1251616-51-9 |
| Molecular Formula | C21H21N3O2 |
| Molecular Weight | 347.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 347.41 g/mol gives 2-(10-Oxo-3,4,5,10-tetrahydrobenzo[b][1,6]naphthyridin-2(1H)-yl)-N-(o-tolyl)acetamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(10-Oxo-3,4,5,10-tetrahydrobenzo[b][1,6]naphthyridin-2(1H)-yl)-N-(o-tolyl)acetamide (CAS 1251616-51-9), molecular formula C21H21N3O2 and molecular weight 347.41 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(10-Oxo-3,4,5,10-tetrahydrobenzo[b][1,6]naphthyridin-2(1H)-yl)-N-(o-tolyl)acetamide (C21H21N3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 347.41 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.
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), 2-(10-Oxo-3,4,5,10-tetrahydrobenzo[b][1,6]naphthyridin-2(1H)-yl)-N-(o-tolyl)acetamide 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 | C21H21N3O2 |
| Molecular Weight | 347.41 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
Related Oxo Standards
- N-(4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)naphthalene-2-sulfonamide (CAS 304690-75-3)
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Recommended Standards
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- Benzyl 5-cyanospiro[indoline-3,4'-piperidine]-1'-carboxylate (CAS 1243474-73-8)
- 2-((4-Methoxyphenyl)thio)-N-(5-(thiophen-3-yl)-1,3,4-oxadiazol-2-yl)acetamide (CAS 1251706-56-5)
- Chlorambucil Sodium Salt (CAS 1030-06-4)
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- 1-(5-Chloro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-n-methylmethanamine (CAS 2096333-97-8)
- SQ 22536 (CAS 17318-31-9)
- 3-(Quinazolin-4-ylamino)propanoic acid (CAS 348149-41-7)
- n-(3,5-Dichlorobenzyl)butan-2-amine (CAS 1040692-91-8)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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