5-Amino-3-thioxo-2,3-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-7(1H)-one CAS 41266-68-6
| CAS No. | 41266-68-6 |
| Molecular Formula | C5H5N5OS |
| Molecular Weight | 183.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-Amino-3-thioxo-2,3-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-7(1H)-one (C5H5N5OS) contains an amide group, sulfur-containing functionality, 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 183.19 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 5-Amino-3-thioxo-2,3-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-7(1H)-one (CAS 41266-68-6), a certified reference material (molecular formula C5H5N5OS, MW 183.19 g/mol) for analytical method development and quality control.
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), 5-Amino-3-thioxo-2,3-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-7(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 | C5H5N5OS |
| Molecular Weight | 183.19 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Amino Standards
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Recommended Standards
- 5-(Methylthio)-1H-[1,2,3]triazolo[4,5-d]pyrimidin-7(4H)-one (CAS 62700-63-4)
- 5-Methoxy-[1,2,4]triazolo[1,5-a][1,3,5]triazine-7(1H)-thione (CAS 500892-61-5)
- 5-(Methylthio)-[1,2,4]triazolo[1,5-a][1,3,5]triazin-7(1H)-one (CAS 40597-87-3)
- 5-(1H-1,2,4-triazol-1-ylmethyl)-1,3,4-oxadiazole-2-thiol (CAS 852933-13-2)
- tert-butyl 3,3-dimethyl-1,2,3,4-tetrahydroquinoxaline-1-carboxylate (CAS 1375472-20-0)
- tert-butyl 4-azido-3-methyl-piperidine-1-carboxylate (CAS 1107660-13-8)
- N-(4-Bromobenzoyl)-4-methylpiperazine-1-carboxamide (CAS 6312-50-1)
- (S)-tBu-iQuinox (CAS 1402851-52-8)
- 5-benzyl-4-(2-furylmethyl)-4H-1,2,4-triazole-3-thiol (CAS 537017-46-2)
- 2,2-Dimethylchroman-4-one (CAS 3780-33-4)
- Methyl [3,4'-bipyridine]-5-carboxylate (CAS 113893-01-9)
- N-Cyclopropyl-4-bromo-3-methylbenzenesulfonamide (CAS 876875-59-1)
- 1,3-Dimethyl-1,6-dihydro-2H-pyrrolo[3,4-d]pyrimidine-2,4(3H)-dione (CAS 1396807-57-0)
- Semaglutide Impurity 139 (CAS CATO-C4X-2226139)
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