4-Bromo-2,2,6,6-tetramethyltetrahydro-2H-pyran CAS 1638761-40-6
| CAS No. | 1638761-40-6 |
| Molecular Formula | C9H17BrO |
| Molecular Weight | 221.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Bromo-2,2,6,6-tetramethyltetrahydro-2H-pyran (CAS 1638761-40-6) is a high-purity analytical reference standard with the molecular formula C9H17BrO and a molecular weight of 221.13 g/mol.
Structurally, 4-Bromo-2,2,6,6-tetramethyltetrahydro-2H-pyran (C9H17BrO) contains a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 221.13 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 4-Bromo-2,2,6,6-tetramethyltetrahydro-2H-pyran meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H17BrO |
| Molecular Weight | 221.13 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 2-(3-Bromo-2,2-dimethylpropyl)tetrahydrofuran (CAS 1196044-36-6)
- 1-Bromo-2-butoxycyclopentane (CAS 1247108-84-4)
- 1-Bromo-2-(tert-butoxy)cyclopentane (CAS 1248513-85-0)
- 4-(3-Bromo-2-methylpropyl)tetrahydro-2h-pyran (CAS 1339198-74-1)
- ((3-Bromo-2,2-dimethylpropoxy)methyl)cyclopropane (CAS 1479308-46-7)
- 2-Bromo-1,1-dimethyl-4-propoxycyclobutane (CAS 1541735-86-7)
- (2-bromo-1-methoxyethyl)cyclohexane (CAS 1955514-24-5)
- 1-Bromo-2-methoxycyclooctane (CAS 74305-07-0)
Recommended Standards
- 3-(Bromomethyl)-3-propyltetrahydro-2h-pyran (CAS 1694256-80-8)
- 3-(Bromomethyl)-2,2,5,5-tetramethyloxolane (CAS 1505987-56-3)
- 6-(2,2,2-Trifluoroethoxy)nicotinic acid (CAS 175204-90-7)
- 1,3,3a1,4,6,7,9-Heptaazaphenalene-2,5,8-triol (CAS 1502-46-1)
- 4-(4-Chlorophenyl)-5-((4-ethoxyphenoxy)methyl)-4h-1,2,4-triazole-3-thiol (CAS 721916-32-1)
- 4-(MEthylthio)-2-(trifluoromethyl)phenol (CAS 85092-98-4)
- 3-Ethynyl-2-hydroxybenzaldehyde (CAS 910459-12-0)
- 1-((Tetrahydrofuran-3-yl)methyl)-1H-pyrazol-5-amine (CAS 1052564-96-1)
- (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2-fluorophenyl)butanoic acid (CAS 1260591-40-9)
- Tert-butyl (2S,3aS,7aS)-2-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazol-2-yl)octahydro-1H-indole-1-carboxylate (CAS 1415120-53-4)
- N-(4-Chlorophenyl)-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine (CAS 5334-66-7)
- 4,5-Dichloro-1,2,3-dithiazol-1-ium chloride (CAS 75318-43-3)
- 2-(2-(Allyloxy)benzylidene)-6-methyl-2H-thiazolo[3,2-b][1,2,4]triazine-3,7-dione (CAS 606956-41-6)
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
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