2-bromo-1,1-dimethoxycyclobutane CAS 20121-72-6
| CAS No. | 20121-72-6 |
| Molecular Formula | C6H11BrO2 |
| Molecular Weight | 195.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-bromo-1,1-dimethoxycyclobutane (CAS 20121-72-6), molecular formula C6H11BrO2 and molecular weight 195.05 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 2-bromo-1,1-dimethoxycyclobutane is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 195.05 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures 2-bromo-1,1-dimethoxycyclobutane under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H11BrO2 |
| Molecular Weight | 195.05 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
Related bromo Standards
- 5-bromo-2-methylpentanoic acid (CAS 101257-26-5)
- 2-Bromo-2-methylpentanoic acid (CAS 101258-64-4)
- methyl 3-bromo-3-methylbutanoate (CAS 1309885-34-4)
- (2S)-2-Bromo-3-methylpentanoic acid (CAS 1432257-43-6)
- 3-Bromo-1,1-dimethoxycyclobutane (CAS 1955515-88-4)
- (R)-2-Bromo-4-methylpentanoic acid (CAS 42990-28-3)
- (S)-(-)-2-Bromo-3-methylbutyric acid (CAS 32653-37-5)
- (S)-2-Bromo-4-methylpentanoic acid (CAS 28659-87-2)
Recommended Standards
- 2,2-Dichloro-1-(5-methyl-4,5-dihydro-1H-pyrazol-1-yl)ethanone (CAS 96632-27-8)
- 2-Bromo-2-ethylbutanoic acid (CAS 5456-23-5)
- 2-(Bromomethyl)-1,3-dioxepane (CAS 57626-95-6)
- 2-Bromo-3-methylpentanoic acid (CAS 42880-22-8)
- 4-Bromo-7-chloro-1,6-naphthyridine (CAS 1378867-27-6)
- 3-Amino-3-(3-fluorophenyl)propanoic acid hydrochloride (CAS 499794-73-9)
- (2S,3R)-2-(4-Hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-7-methoxy-2,3-dihydrobenzofuran-5-carboxylic acid (CAS 185244-78-4)
- n-(2-Chloro-6-fluorobenzyl)-3-methoxypropan-1-amine (CAS 827328-79-0)
- 3-Amino-N-(3-bromo-4-ethoxy-phenyl)-4-methoxy-benzenesulfonamide (CAS 380442-20-6)
- 5-(4-Nitrophenyl)-4H-1,2,4-triazole-3-carboxylic acid (CAS 944897-44-3)
- 4-Ethyl-3-phenyl-1h-pyrazol-5-amine (CAS 103492-43-9)
- 2,3-Dihydroisoquinoline-1,4-dione (CAS 31053-30-2)
- 1-Vinylcyclopentan-1-amine (CAS 1391303-96-0)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com