Ethyl 3-bromo-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carboxylate CAS 2640485-83-0
| CAS No. | 2640485-83-0 |
| Molecular Formula | C11H15BrN2O3 |
| Molecular Weight | 303.15 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 Ethyl 3-bromo-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carboxylate.
Ethyl 3-bromo-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carboxylate (CAS 2640485-83-0) is a high-purity analytical reference standard with the molecular formula C11H15BrN2O3 and a molecular weight of 303.15 g/mol.
Structurally, Ethyl 3-bromo-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carboxylate (C11H15BrN2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 303.15 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | C11H15BrN2O3 |
| Molecular Weight | 303.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- 2-(2-Bromo-4,5-diethoxyphenyl)acetic acid (CAS 100388-17-8)
- 5-Bromo-3,4-dimethyl-9H-xanthen-9-one (CAS 1035912-43-6)
- ethyl 7-bromo-4-fluoro-benzothiophene-2-carboxylate (CAS 1098608-38-8)
- 3-((5-Bromo-2-hydroxybenzyl)amino)benzonitrile (CAS 1223879-56-8)
- 4-((5-Bromo-2-hydroxybenzyl)amino)benzonitrile (CAS 1223883-44-0)
- 4-Bromo-2-nitro-5-(pentyloxy)aniline (CAS 1255574-52-7)
- 4-Bromo-5-(isopentyloxy)-2-nitroaniline (CAS 1255574-61-8)
- 2-Bromo-5-t-butylamino-4-nitroanisole (CAS 1261988-45-7)
Recommended Standards
- Ethyl 3-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazole-4-carboxylate (CAS 2768321-74-8)
- Ethyl 5-bromo-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carboxylate (CAS 2114211-40-2)
- Ethyl 2-bromo-5-methyl-5,6,7,8-tetrahydropyrazolo[5,1-b][1,3]oxazepine-3-carboxylate (CAS 2757205-74-4)
- Mebeverine Impurity 3 (CAS 943723-19-1)
- N-(Isoquinolin-4-yl)benzamide (CAS 681448-78-2)
- (R)-1-(3-Fluoro-4-(trifluoromethyl)phenyl)ethan-1-amine (CAS 1079656-75-9)
- 1-(4-(2-(Pyrazin-2-yl)vinyl)phenyl)ethanone (CAS 938222-21-0)
- (5-bromo-2-methyl-1H-indol-3-yl)acetic acid (CAS 71987-66-1)
- 2-(2-Cyano-1H-indol-3-yl)acetic acid (CAS 1069110-90-2)
- Dotinurad Impurity 229 (CAS CATO-C4X-2494229)
- 4-Methyl-3-(1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazol-4-yl)-5-(propylthio)-4H-1,2,4-triazole (CAS 956741-70-1)
- (E,E)-Methyl Farnesoate (CAS 10485-70-8)
- 2-(Benzo[d]thiazol-2-yl)-5-methyl-1,3,4-oxadiazole (CAS 55439-43-5)
- D-Ala18-Tirzepatide (CAS CATO-CPTD788916)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com