5,6-Dihydro-2H-[1,2,4]triazolo[3,4-c][1,4]oxazin-3(8H)-one CAS 133365-36-3
| CAS No. | 133365-36-3 |
| Molecular Formula | C5H7N3O2 |
| Molecular Weight | 141.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5,6-Dihydro-2H-[1,2,4]triazolo[3,4-c][1,4]oxazin-3(8H)-one (CAS 133365-36-3) is a high-purity analytical reference standard with the molecular formula C5H7N3O2 and a molecular weight of 141.13 g/mol.
Based on its molecular formula C5H7N3O2, 5,6-Dihydro-2H-[1,2,4]triazolo[3,4-c][1,4]oxazin-3(8H)-one contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 141.13 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 5,6-Dihydro-2H-[1,2,4]triazolo[3,4-c][1,4]oxazin-3(8H)-one 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 | C5H7N3O2 |
| Molecular Weight | 141.13 g/mol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 3 |
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- 4-(2,5-Dimethyl-1H-pyrrol-1-yl)benzoic acid (CAS 15898-26-7)
- 4-(Thiophen-2-ylsulfonyl)piperazin-2-one (CAS 923142-46-5)
- Jasmonic Acid (mixture of isomers) (CAS 221682-41-3)
- AZD-PEG5-PFP (CAS 1609569-75-6)
- 3-Cyclohexyl-N-methylpropan-1-amine (CAS 478626-71-0)
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