benzyl 3-amino-1H-pyrazole-4-carboxylate CAS 32016-28-7
| CAS No. | 32016-28-7 |
| Molecular Formula | C11H11N3O2 |
| Molecular Weight | 217.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
benzyl 3-amino-1H-pyrazole-4-carboxylate (CAS 32016-28-7), molecular formula C11H11N3O2 and molecular weight 217.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, benzyl 3-amino-1H-pyrazole-4-carboxylate (C11H11N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 217.22 g/mol, it falls into the medium-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).
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.
Physical & Chemical Properties
| Molecular Formula | C11H11N3O2 |
| Molecular Weight | 217.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 3 |
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- 5-Bromo-2-cyano-3-(difluoromethyl)benzoic acid (CAS 1805593-71-8)
- 4-((Anthracen-9-ylmethylene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478255-61-7)
- tert-Butyl 4-formyl-2-hydroxybenzoate (CAS 1629252-29-4)
- 2-[(4-chlorophenoxy)methyl]-1,3-thiazole-4-carboxylic acid (CAS 949259-81-8)
- Ethyl 4-bromo-7-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-2-carboxylate (CAS 2377609-01-1)
- 1-(4-Chlorophenyl)-2-(phenylsulfonyl)ethan-1-one (CAS 38488-19-6)
- Methyl 5-iodothiophene-3-carboxylate (CAS 88770-20-1)
- PF 184 (CAS 1187460-81-6)
- (S)-1-Ethyl-6,8-difluoro-7-(3-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 98079-62-0)
- [Ser]8-Acetylated Semaglutide (CAS CATO-C4X-2226218)
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