7-Hydroxy-[1, 2, 4] triazolo[1, 5- a] pyrimidin- 5(1H) - one CAS 40775-75-5
| CAS No. | 40775-75-5 |
| Molecular Formula | C5H4N4O2 |
| Molecular Weight | 152.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 7-Hydroxy-[1, 2, 4] triazolo[1, 5- a] pyrimidin- 5(1H) - one (CAS 40775-75-5), a certified reference material (molecular formula C5H4N4O2, MW 152.11 g/mol) for analytical method development and quality control.
Structurally, 7-Hydroxy-[1, 2, 4] triazolo[1, 5- a] pyrimidin- 5(1H) - one (C5H4N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 152.11 g/mol, it falls into the medium-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.
As a certified reference material (CRM), 7-Hydroxy-[1, 2, 4] triazolo[1, 5- a] pyrimidin- 5(1H) - 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 | C5H4N4O2 |
| Molecular Weight | 152.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 4 |
Related Hydroxy Standards
- 3-Hydroxy-2H-pyrazolo[4,3-d]pyrimidin-7(4H)-one (CAS 70015-70-2)
- 3-Hydroxy-3,7-dihydro-6h-purin-6-one (CAS 55402-91-0)
- 7-Hydroxy-[1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one (CAS 727390-69-4)
- 3-hydroxy-3H-[1,2,3]triazolo[4,5-b]pyridine 1-oxide (CAS CATO-C3D-5795)
- 5-hydroxy-2H-1,3-benzodioxol-2-one (CAS 78213-00-0)
- 2-Hydroxy-4,5-dimethyl-1,3,2-dioxaphospholane 2-Oxide (CAS 50577-87-2)
- 3-Hydroxy-2-methyl-d3-benzoic Acid (CAS 1020719-51-0)
- 6-Hydroxy-1,4-benzodioxane (CAS 10288-72-9)
Recommended Standards
- 6-methyltetrazolo[1,5-b][1,2,4]triazin-7(1H)-one (CAS 61788-18-9)
- 6-Amino-5-formylamino-3H-pyrimidine-4-one (CAS 64194-58-7)
- 7-Methylpyrazolo[4,3-e][1,3,4]oxadiazin-3(2H)-one (CAS 927186-99-0)
- 6-Amino-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 465532-05-2)
- 2-(3,4-Dihydroxybenzylidene)-6-hydroxybenzofuran-3(2H)-one (CAS 100433-06-5)
- 1-(5-fluorobenzofuran-6-yl)ethanone (CAS 2481589-96-0)
- 1-(furan-2-yl)-3-methoxypropan-1-amine (CAS 1250282-44-0)
- Dofetilide Impurity 11 (CAS 51767-39-6)
- 2-Bromo-3,4,6-trifluorobenzene-1-sulfonyl chloride (CAS 1208076-80-5)
- Ethyl 2-cyano-2-(1,1-dioxo-1λ6-thiolan-3-yl)acetate (CAS 17134-14-4)
- 2-(3-Chloro-2-methylpropoxy)butane (CAS 1341423-22-0)
- (4-Isopropylphenyl)trimethylsilane (CAS 18027-97-9)
- Budesonide Impurity 64 (CAS 69155-84-6)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com