4-Amino-1-methyl-1H-pyrazole-3-carboxamide CAS 3920-40-9
| CAS No. | 3920-40-9 |
| Molecular Formula | C5H8N4O |
| Molecular Weight | 140.14 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-1-methyl-1H-pyrazole-3-carboxamide.
4-Amino-1-methyl-1H-pyrazole-3-carboxamide (CAS 3920-40-9), molecular formula C5H8N4O and molecular weight 140.14 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Amino-1-methyl-1H-pyrazole-3-carboxamide (C5H8N4O) contains an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 140.14 g/mol, it falls into the low-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C5H8N4O |
| Molecular Weight | 140.14 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 4 |
Related Amino Standards
- 2-(3-amino-1H-pyrazol-1-yl)acetamide (CAS 1003011-28-6)
- 5-Amino-6-(methylamino)pyrimidin-2(1H)-one (CAS 104096-91-5)
- 5-Amino-6-methoxypyridin-2-ol (CAS 1094935-67-7)
- 6-Amino-5-methoxypyridin-3-ol (CAS 1105933-56-9)
- 3-Amino-1-methyl-1h-pyrazole-5-carboxamide (CAS 1129541-01-0)
- 4-Amino-3-methoxypyridine 1-oxide (CAS 115282-74-1)
- 2-(4-Amino-1h-pyrazol-1-yl)acetamide (CAS 1152939-86-0)
- 2-Amino-N-(1H-pyrazol-4-yl)acetamide (CAS 1154594-08-7)
Recommended Standards
- 4-Amino-1-methyl-1H-imidazole-5-carboxamide (CAS 5413-89-8)
- 4-Amino-1-methyl-1H-pyrazole-5-carboxamide (CAS 92534-73-1)
- 4-Amino-1-methyl-1H-imidazole-2-carboxamide (CAS 827588-62-5)
- 4-Amino-1-methyl-1h-pyrrole-2-carboxylic acid (CAS 45776-13-4)
- Sarizotan Impurity 2 (CAS 177976-33-9)
- Dimethyl 2-methylfumarate (CAS 84569-14-2)
- Ethyl 2,3-dimethyl-6-(trifluoromethyl)imidazo[2,1-b]thiazole-5-carboxylate (CAS 1956341-89-1)
- 2-Methylbenzo[d]thiazol-6-ol (CAS 68867-18-5)
- 3-(3,4-Dimethoxyphenyl)-6-ethoxy-4-methyl-2H-chromen-2-one (CAS 720674-30-6)
- Vericiguat Impurity 1 (CAS 1350653-30-3)
- 6-(5,6,7,8-Tetrahydronaphthalen-2-yl)imidazo[2,1-b]thiazole (CAS 881040-61-5)
- Biocytin hydrazide, 95% (CAS 102743-85-1)
- 1,1,3-Triethoxypropane (CAS 7789-92-6)
- endo-Arg30-Semaglutide (CAS CATO-C4X-2226281)
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