4-Chloro-1H-pyrazol-3-amine CAS 54301-34-7
| CAS No. | 54301-34-7 |
| Molecular Formula | C3H4ClN3 |
| Molecular Weight | 117.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-1H-pyrazol-3-amine (C3H4ClN3) contains a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
4-Chloro-1H-pyrazol-3-amine (CAS 54301-34-7), molecular formula C3H4ClN3 and molecular weight 117.54 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.
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 | C3H4ClN3 |
| Molecular Weight | 117.54 g/mol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 3-Chloro-1H-pyrazol-4-amine (CAS 103286-54-0)
- 4-Chloro-2-methyl-2H-1,2,3-triazole (CAS 109299-74-3)
- 3-Chloro-5-methyl-1H-1,2,4-triazole (CAS 15285-15-1)
- 2-Chloro-N-cyanoacetimidamide (CAS 53737-87-4)
- 3-Chloro-1-methyl-1H-1,2,4-triazole (CAS 56616-92-3)
- 3-Chloro-4-methyl-4H-1,2,4-triazole (CAS 56616-87-6)
- 4-Chloro-1H-pyrazol-1-amine (CAS 3994-41-0)
- 4-Chloro-1-methyl-1H-1,2,3-triazole (CAS 856861-55-7)
Recommended Standards
- 5-(Chloromethyl)-1H-1,2,3-triazole (CAS 854937-88-5)
- 5-(Chloromethyl)-1H-1,2,4-triazole (CAS 55928-92-2)
- 5-Chloro-1H-pyrazol-3-amine (CAS 916211-79-5)
- 2-(chloromethyl)-2H-1,2,3-triazole (CAS 80199-90-2)
- 3-chloro-5-ethoxy-4-propoxybenzoic acid (CAS 723245-44-1)
- 2-(6-(Isobutylamino)pyridin-3-yl)piperidine-1-carbaldehyde (CAS 1352501-03-1)
- Tert-butyl(4-iodophenoxy)dimethylsilane (CAS 133430-99-6)
- 4-Methylbenzofuran-2-carboxylic acid (CAS 5670-24-6)
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- 3-Methoxytetrahydrofuran-3-carbaldehyde (CAS 1784292-25-6)
- Kaempferol 3-O-β-D-glucopyranosyl-(1→2)-α-L-rhamnopyranoside (CAS 142451-65-8)
- 7-bromo-4,6,8-trichloroquinazoline (CAS 1698027-57-4)
- (R)-Glycidyl 4-nitrobenzene sulfonate, 98% (CAS 118629-64-4)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788677)
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