1-Isopropyl-3-((3-methylisoxazol-5-yl)methyl)urea CAS 1340872-59-4
| CAS No. | 1340872-59-4 |
| Molecular Formula | C9H15N3O2 |
| Molecular Weight | 197.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1-Isopropyl-3-((3-methylisoxazol-5-yl)methyl)urea (C9H15N3O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-Isopropyl-3-((3-methylisoxazol-5-yl)methyl)urea (CAS 1340872-59-4), molecular formula C9H15N3O2 and molecular weight 197.23 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H15N3O2 |
| Molecular Weight | 197.23 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
Related Isopropyl Standards
- 3-Isopropyl-5-propylisoxazole-4-carboxylic acid (CAS 1048920-38-2)
- 5-Isopropyl-1-propyl-1h-1,2,3-triazole-4-carboxylic acid (CAS 1247760-00-4)
- 1-Isopropyl-5-propyl-1h-1,2,3-triazole-4-carboxylic acid (CAS 1248142-36-0)
- Ethyl 1-isopropyl-3-methyl-1H-1,2,4-triazole-5-carboxylate (CAS 1282517-47-8)
- Isopropyl 2-(3-amino-4-methyl-1h-pyrazol-1-yl)acetate (CAS 1342061-55-5)
- 1-((3-Isopropyl-1,2,4-oxadiazol-5-yl)methyl)azetidin-3-ol (CAS 1342974-78-0)
- 3-(5-Isopropyl-1,2,4-oxadiazol-3-yl)morpholine (CAS 1461869-31-7)
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Recommended Standards
- 2-Acetamido-2-(cyclohex-3-en-1-yl)acetic acid (CAS 1340502-41-1)
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- 1-(2-((Tetrahydrofuran-3-yl)oxy)ethyl)-1h-pyrazol-3-amine (CAS 1340466-42-3)
- Methyl 2-amino-2-methyl-3-(3-methyl-1h-pyrazol-1-yl)propanoate (CAS 1341323-91-8)
- 6-(Adamantan-1-yl)-2-((2-oxo-2-phenylethyl)thio)nicotinonitrile (CAS 105648-32-6)
- 1-(Thiophene-2-carbonyl)piperidin-4-one (CAS 141945-71-3)
- {1-[(1-methyl-1h-pyrazol-4-yl)methyl]piperidin-3-yl}methanamine (CAS 1006483-95-9)
- 3-(3-Chloro-4-fluorophenyl)propanoic acid (CAS 881190-93-8)
- 4-Bromobenzene-1,3-diamine dihydrochloride (CAS 1049728-71-3)
- Butanoic acid, 4-bromo-, 2,5-dioxo-1-pyrrolidinyl ester (CAS 42014-52-8)
- Rebaudioside A (CAS 58543-16-1)
- 2-Chloro-3-(1H-pyrrol-1-yl)pyridine (CAS 70291-26-8)
- Sitagliptin Impurity 150 (CAS 945261-47-2)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
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