[1,2,4]triazolo[1,5-a]pyrimidine hydrochloride CAS 956074-70-7
| CAS No. | 956074-70-7 |
| Molecular Formula | C5H4N4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, [1,2,4]triazolo[1,5-a]pyrimidine hydrochloride (C5H4N4HCl) contains a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 156.57 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).
[1,2,4]triazolo[1,5-a]pyrimidine hydrochloride (CAS 956074-70-7), molecular formula C5H4N4HCl and molecular weight 156.57 g/mol, is a CATO reference standard with documented purity and traceability.
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), [1,2,4]triazolo[1,5-a]pyrimidine hydrochloride 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 | C5H4N4 HCl |
| Molecular Weight | 156.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related triazolo Standards
- [1,2,4]triazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 1000930-72-2)
- 7-Methyl-[1,2,4]triazolo[1,5-a]pyrimidine-2(1H)-thione (CAS 100114-29-2)
- (6-Phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methanamine (CAS 1002310-51-1)
- 3-Methyl-[1,2,4]triazolo[4,3-a]pyridine (CAS 1004-65-5)
- Methyl [1,2,4]Triazolo[1,5-a]pyridine-7-carboxylate (CAS 1005205-51-5)
- 1-([1,2,4]triazolo[4,3-a]pyridin-3-yl)-3-methylbutan-1-amine (CAS 1016815-84-1)
- 5-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}pentan-1-amine (CAS 1016835-11-2)
- 4-{[1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl}aniline (CAS 1016839-14-7)
Recommended Standards
- Ethyl 3-Bromo-4-(difluoromethoxy)phenylacetate (CAS 1445891-64-4)
- Methyl 3-formyl-2-hydroxybenzoate (CAS 3775-05-1)
- 1-(5-Methyl-1H-pyrazol-3-yl)-1H-pyrrole-2,5-dione (CAS 193463-89-7)
- 4-[2-(diethylamino)ethoxy]benzoic acid hydrochloride (CAS 59931-28-1)
- N-(9-((1R,3R,4R,7S)-1-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-7-hydroxy-6-methyl-2,5-dioxabicyclo[2.2.1]heptan-3-yl)-6-oxo-6,9-dihydro-1H-purin-2-yl)isobutyramide (CAS 945628-65-9)
- Isovaleraldehyd-2,4-dinitrophenylhydrazone (CAS 2256-01-1)
- 1-(1-Fluorovinyl)-4-methylbenzene (CAS 66472-50-2)
- 4-Bromo-5-fluoroquinoline (CAS 1823422-36-1)
- 1-(2-Methoxybenzyl)-3-(o-tolyl)urea (CAS 904147-05-3)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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