4-Amino-3-methyl-1H-pyrazole-5-carboxylic acid CAS 94993-81-4
| CAS No. | 94993-81-4 |
| Molecular Formula | C5H7N3O2 |
| Molecular Weight | 141.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Amino-3-methyl-1H-pyrazole-5-carboxylic acid.
CATO supplies 4-Amino-3-methyl-1H-pyrazole-5-carboxylic acid (CAS 94993-81-4), a certified reference material (molecular formula C5H7N3O2, MW 141.13 g/mol) for analytical method development and quality control.
The molecular framework of 4-Amino-3-methyl-1H-pyrazole-5-carboxylic acid (C5H7N3O2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C5H7N3O2 |
| Molecular Weight | 141.13 g/mol |
| 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 |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 3 |
Related Amino Standards
- 2-(3-Amino-1H-pyrazol-1-yl)acetic acid (CAS 1006319-29-4)
- 4-Amino-1-methylpyrazole-3-carboxylic Acid (CAS 1006334-34-4)
- 2-(4-Amino-1H-pyrazol-1-yl)acetic acid (CAS 1006348-46-4)
- 5-Amino-N-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 1019126-62-5)
- 4-Amino-1H-pyrazole-3-carbohydrazide (CAS 1026783-39-0)
- 1119471-86-1 methyl 4-amino-1H-pyrazole-5-carboxylate hydrochloride (CAS 1119471-86-1)
- 5-Amino-1-methyl-1H-imidazole-4-carboxylic acid (CAS 112277-40-4)
- 5-Amino-1-methyl-1H-pyrazole-3-carboxylic Acid (CAS 117860-53-4)
Recommended Standards
- 4-Amino-1-methyl-1H-Imidazole-5-carboxylic Acid (CAS 858512-11-5)
- 4-Amino-5-hydroxy-2H-pyrrole-3-carboxamide (CAS 54718-02-4)
- 4-Amino-1-methyl-1H-imidazole-2-carboxylic acid (CAS 263710-28-7)
- 4-Amino-6-(methylamino)-1,3,5-triazin-2-ol (CAS 850879-26-4)
- SB-268262 (CAS 217438-17-0)
- 5-Methoxy-4-(phenylsulfanyl)-2-[3-(trifluoromethyl)phenyl]pyrimidine (CAS 478030-30-7)
- Methyl 2-Acetoxy-3-chloropropanoate (CAS 78626-45-6)
- 1-Bromo-2-(isobutoxymethyl)pentane (CAS 1490076-00-0)
- 4-(3-propyl-1,2,4-oxadiazol-5-yl)butanoic acid (CAS 1153313-94-0)
- Naphtho[1,2-c]furan-1(3H)-one (CAS 5657-01-2)
- Evocalcet Impurity 27 (CAS 1039631-63-4)
- 4-Bromo-3-(difluoromethoxy)-1-methyl-1H-pyrazole (CAS 2665661-07-2)
- 1H-1,2,3-triazole-4-carboximidamide hydrochloride (CAS 1808444-75-8)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
Why CATO?
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