4-Isobutyl-3-(thiophen-2-yl)-1h-pyrazol-5-amine CAS 1325202-72-9
| CAS No. | 1325202-72-9 |
| Molecular Formula | C11H15N3S |
| Molecular Weight | 221.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Isobutyl-3-(thiophen-2-yl)-1h-pyrazol-5-amine (CAS 1325202-72-9), molecular formula C11H15N3S and molecular weight 221.32 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, 4-Isobutyl-3-(thiophen-2-yl)-1h-pyrazol-5-amine is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 221.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H15N3S |
| Molecular Weight | 221.32 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Isobutyl Standards
- 3-Isobutyl-4-(thiophen-2-yl)-1h-pyrazol-5-amine (CAS 1340485-91-7)
- N-isobutyl-2-(m-tolyloxy)acetamide (CAS 3893-85-4)
- 1-Ethyl-3-isobutyl-1,4,5,6,7,8-hexahydropyrazolo[3,4-b]azepine (CAS 583811-70-5)
- 4-Isobutyl-1-methyl-3-(trifluoromethyl)-1h-pyrazol-5-amine (CAS 1250383-01-7)
- Isobutyl-5-chloro-2, 2-dimethyl valerate (CAS 109232-37-3)
- N-Isobutyl-2-nitrobenzamide (CAS 88358-27-4)
- N-isobutyl-3-nitrobenzamide (CAS 2448-05-7)
- 3-Isobutyl-1-Methylxanthine (CAS 28822-58-4)
Recommended Standards
- 2-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(thiophen-3-yl)ethan-1-amine (CAS 1250017-10-7)
- 4-Ethyl-3-(5-ethylthiophen-2-yl)-1h-pyrazol-5-amine (CAS 1329120-26-4)
- 3-(5-(Pyrrolidin-1-ylmethyl)thiophen-3-yl)prop-2-yn-1-ol (CAS 1249839-87-9)
- 1-((5-Ethylthiophen-2-yl)methyl)-4-methyl-1h-pyrazol-3-amine (CAS 1339264-03-7)
- 4-(Aminomethyl)-1-phenylpyrrolidin-2-one hydrochloride (CAS 148436-12-8)
- Nonanehydrazide (CAS 3338-51-0)
- 5-(chloromethyl)-3-[1-(ethylsulfanyl)ethyl]-1,2,4-oxadiazole (CAS 1421602-63-2)
- (S)-3,3-DIMETHYLPYRROLIDINE-2-CARBOXYLIC ACID (CAS 76804-64-3)
- Cis-2-aminomethyl-1-cyclohexanolhydrochloride (CAS 28250-37-5)
- 3-(1-Methyl-1h-imidazol-2-yl)propan-1-amine (CAS 133485-23-1)
- Landiolol Impurity 94 (CAS CATO-C4X-262194)
- 4-(4-Chloro-3-methylphenyl)-4-oxobutanoic acid (CAS 54557-91-4)
- 2-Amino-6-(4-methylphenyl)pyridine-3,4,5-tricarbonitrile (CAS 478081-23-1)
- Urotensin II-Related Peptide (human, mouse, rat) (CAS 342878-90-4)
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