3-Ethyl-4-isopropyl-1H-1,2,4-triazol-5(4H)-one CAS 135280-78-3
| CAS No. | 135280-78-3 |
| Molecular Formula | C7H13N3O |
| Molecular Weight | 155.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H13N3O, 3-Ethyl-4-isopropyl-1H-1,2,4-triazol-5(4H)-one contains an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 155.20 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.
3-Ethyl-4-isopropyl-1H-1,2,4-triazol-5(4H)-one (CAS 135280-78-3), molecular formula C7H13N3O and molecular weight 155.20 g/mol, is a CATO reference standard with documented purity and traceability.
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), 3-Ethyl-4-isopropyl-1H-1,2,4-triazol-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.
Physical & Chemical Properties
| Molecular Formula | C7H13N3O |
| Molecular Weight | 155.20 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 1-(3-Isopropyl-1,2,4-oxadiazol-5-yl)-N-methylmethanamine (CAS 1041527-07-4)
- 2-(1-Isopropyl-1H-tetrazol-5-yl)ethan-1-amine (CAS 1092290-96-4)
- 4-Ethyl-3-isopropyl-1H-1,2,4-triazol-5(4H)-one (CAS 135301-61-0)
- 1-Isopropyl-3-methoxy-1h-pyrazol-4-amine (CAS 1431962-25-2)
- 1-(1-Isopropyl-1H-1,2,3-triazol-4-yl)ethan-1-ol (CAS 1510879-45-4)
- 1-Isopropyl-2,5-dimethyl-1H-1,2,4-triazol-3(2H)-one (CAS 156519-93-6)
- (2-isopropyl-5-methyl-1,2,4-triazol-3-yl)methanol (CAS 2770348-39-3)
- 2-(5-Isopropyl-1,3,4-oxadiazol-2-yl)ethan-1-amine (CAS 944907-23-7)
Recommended Standards
- 1-(2-methoxyethyl)-4-methyl-1h-pyraZol-3-amine (CAS 1344250-05-0)
- 3-Amino-N-cyclopropylazetidine-1-carboxamide (CAS 1343620-60-9)
- 1-Methyl-3-(propan-2-yloxy)-1h-pyrazol-4-amine (CAS 1354241-25-0)
- 5-ethoxypyrazine-2-carbonitrile (CAS 1342594-75-5)
- Imidapril Benzyl Ester t-Butyl Ester (CAS 89460-20-8)
- N-cyclopropyl-1H-indole-4-carboxamide (CAS 1153845-91-0)
- 2-((Tert-butoxycarbonyl)amino)-2-(4-fluoro-3-methylphenyl)acetic acid (CAS 1404638-76-1)
- 1-(4-FLUOROPYRIDIN-2-YL)-3-METHYLUREA (CAS 1443108-74-4)
- 1-Cyanocyclopropane-1-sulfonamide (CAS 1108658-23-6)
- 1142210-97-6 [3-(Propan-2-yl)-4,5-dihydro-1,2-oxazol-5-yl]methanol DTXSID00649337 (CAS 1142210-97-6)
- 4-(2-Methoxyethoxy)butanenitrile (CAS 875213-03-9)
- 1-(3-acetylphenyl)pyrrolidin-2-one (CAS 765917-13-3)
- 2-[(3S)-1-(9h-fluoren-9-ylmethoxycarbonyl)-3-piperidyl]aceticacid (CAS 1217646-18-8)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
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