| CAS No. | 36183-70-7 |
| Molecular Formula | C4H5N5O |
| Molecular Weight | 139.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
6,7-Dihydro-1H-[1,2,3]triazolo[4,5-d]pyrimidin-5(4H)-one (CAS 36183-70-7), molecular formula C4H5N5O and molecular weight 139.12 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a hydroxyl group, an ether linkage, 6,7-Dihydro-1H-[1,2,3]triazolo[4,5-d]pyrimidin-5(4H)-one is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 139.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), 6,7-Dihydro-1H-[1,2,3]triazolo[4,5-d]pyrimidin-5(4H)-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.
| Molecular Formula | C4H5N5O |
| Molecular Weight | 139.12 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 5 |