4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-acetic Acid CAS 1083326-41-3
| CAS No. | 1083326-41-3 |
| Molecular Formula | C11H17BN2O4 |
| Molecular Weight | 252.07 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.
4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-acetic Acid (CAS 1083326-41-3) is a high-purity analytical reference standard with the molecular formula C11H17BN2O4 and a molecular weight of 252.07 g/mol.
Structurally, 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-acetic Acid (C11H17BN2O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.5, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 252.07 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C11H17BN2O4 |
| Molecular Weight | 252.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Related Tetramethyl Standards
- methyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)furan-3-carboxylate (CAS 1111096-29-7)
- Methyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)furan-2-carboxylate (CAS 1227664-17-6)
- 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyrazole-1-carboxylic acid methyl ester (CAS 1416060-21-3)
- Methyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)furan-2-carboxylate (CAS 1630807-26-9)
- Methyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)furan-3-carboxylate (CAS 2363164-32-1)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-ene-1-carboxylic acid (CAS 1447763-50-9)
- Methyl 3-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methylene)cyclobutanecarboxylate (CAS 2365173-42-6)
- Methyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)bicyclo[1.1.1]pentane-1-carboxylate (CAS 2410440-12-7)
Recommended Standards
- 3-Bromo-7-methoxyimidazo[1,2-a]pyridine-8-carbonitrile (CAS 1072944-45-6)
- Ethyl 3-amino-2,4-dichloro-5-fluorobenzoate (CAS 1089333-20-9)
- 2-((2-Bromopyridin-3-yl)oxy)pyrazine (CAS 1065484-64-1)
- 5-Bromo-2-(4-pyridyloxy)pyrimidine (CAS 1017789-07-9)
- (2-Bromo-3-cyclopropoxypyridin-4-yl)methanamine (CAS 1243440-38-1)
- 1-(2-Chloro-6-fluorophenyl)-2,2,2-trifluoroethan-1-ol (CAS 1249544-27-1)
- 4-(Difluoromethoxy)phenol (CAS 87789-47-7)
- N-4-Methoxybenzyl 2-bromo-6-nitroaniline (CAS 1215205-09-6)
- O-Ethyl 3-ethoxy-1-methyl-1H-pyrazole-4-carbothioate (CAS 146904-63-4)
- 5-Iodo-1H-indazole-3-carbonitrile (CAS 885278-27-3)
- Methyl 5-bromo-4-nitro-1H-indazole-3-carboxylate (CAS 1403767-11-2)
- (5-Bromo-4-fluoropyridin-3-yl)boronic acid (CAS 2225177-26-2)
- 2-(Pyridin-2-yl)oxazolidine (CAS 100377-21-7)
- Insulin degludec (CAS 844439-96-9)
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