5'-Bromospiro[cyclobutane-1,3'-indolin]-2'-one CAS 304876-39-9
| CAS No. | 304876-39-9 |
| Molecular Formula | C11H10BrNO |
| Molecular Weight | 252.11 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.
CATO supplies 5'-Bromospiro[cyclobutane-1,3'-indolin]-2'-one (CAS 304876-39-9), a certified reference material (molecular formula C11H10BrNO, MW 252.11 g/mol) for analytical method development and quality control.
Structurally, 5'-Bromospiro[cyclobutane-1,3'-indolin]-2'-one (C11H10BrNO) 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 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 252.11 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).
As a certified reference material (CRM), 5'-Bromospiro[cyclobutane-1,3'-indolin]-2'-one 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 | C11H10BrNO |
| Molecular Weight | 252.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromospiro Standards
- 6'-Bromospiro[cyclobutane-1,3'-indolin]-2'-one (CAS 1190861-39-2)
- 6-bromospiro[2,3-dihydroisoquinoline-4,1'-cyclopropane]-1-one (CAS 1396777-75-5)
- 5'-Bromospiro[cyclopentane-1,3'-indoline] (CAS 1160247-93-7)
- 7-Bromospiro[2,3-dihydro-2,6-naphthyridine-4,1'-cyclopropane]-1-one (CAS 2854319-56-3)
- 7'-Bromospiro[cyclopropane-1,3'-pyrido[3,4-b][1,4]oxazin]-2'(1'H)-one (CAS 2765503-06-6)
- 6-Bromospiro[2H-1,5-benzodioxepin-3(4H),1′-cyclopropane] (CAS 1334499-94-3)
- 6'-bromospiro[azetidine-2,2'-tetralin] (CAS 1478735-16-8)
- 2'-Bromospiro[cyclopropane-1,6'-thieno[2,3-c]pyrrol]-4'(5'H)-one (CAS 1951483-77-4)
Recommended Standards
- 5-Bromo-6-methoxy-2-methylquinoline (CAS 475682-39-4)
- 6-bromo-1-azatricyclo[6.3.1.0⁴¹²]dodeca-4(12),5,7-trien-11-one (CAS 57368-91-9)
- 5-Bromo-6-ethoxyquinoline (CAS 663193-90-6)
- 6-Bromo-2-(cyclopropylmethyl)-1H-imidazo[4,5-b]pyridine (CAS 947533-92-8)
- 5-(Benzylthio)-2,3-dihydro-1H-inden-1-one (CAS 132630-11-6)
- 5-Bromo-3-fluoro-2-nitroaniline (CAS 1193385-18-0)
- 4-Propylpyridine (CAS 1122-81-2)
- Methyl 4-(2-morpholinoethoxy)benzoate (CAS 92501-87-6)
- 1-(Cyclohexylcarbamoyl)pyrrolidine-2-carboxylic acid (CAS 674299-62-8)
- 3-(2,2-Difluoroethoxy)-4-nitro-1H-pyrazole (CAS 1787881-30-4)
- 2,6-Difluoro-N-(4-(trifluoromethyl)phenyl)benzamide (CAS 710291-55-7)
- 2-(4-Iodo-5-(3-methoxyphenyl)-1H-pyrazol-1-yl)ethanol (CAS 1708037-72-2)
- N-(9-((2R,4S,5R)-5-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxytetrahydrofuran-2-yl)-8-oxo-8,9-dihydro-7H-purin-6-yl)benzamide (CAS 142979-41-7)
- [a-Glu](Side chain transposition)- Semaglutide (CAS CATO-C4X-2226111)
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