.alpha.-Bromo-.gamma.-butyrolactone .alpha.-Bromobutyric acid, .gamma.-lactone .alpha.-Bromobutyrolactone 2(3H)-Furanone, 3-bromodihydro- 2-Bromo-.gamma.-butyrolactone 2-Bromo-4-butanolide 2-Bromobutyrolactone 3-Bromo-2-furanone 5061-21-2 NSC-56959 NSC56959 CAS 5061-21-2
| CAS No. | 5061-21-2 |
| Molecular Formula | C4H5BrO2 |
| Molecular Weight | 164.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 164.99 g/mol gives .alpha.-Bromo-.gamma.-butyrolactone .alpha.-Bromobutyric acid, .gamma.-lactone .alpha.-Bromobutyrolactone 2(3H)-Furanone, 3-bromodihydro- 2-Bromo-.gamma.-butyrolactone 2-Bromo-4-butanolide 2-Bromobutyrolactone 3-Bromo-2-furanone 5061-21-2 NSC-56959 NSC56959 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
.alpha.-Bromo-.gamma.-butyrolactone .alpha.-Bromobutyric acid, .gamma.-lactone .alpha.-Bromobutyrolactone 2(3H)-Furanone, 3-bromodihydro- 2-Bromo-.gamma.-butyrolactone 2-Bromo-4-butanolide 2-Bromobutyrolactone 3-Bromo-2-furanone 5061-21-2 NSC-56959 NSC56959 (CAS 5061-21-2), molecular formula C4H5BrO2 and molecular weight 164.99 g/mol, is a CATO reference standard with documented purity and traceability.
.alpha.-Bromo-.gamma.-butyrolactone .alpha.-Bromobutyric acid, .gamma.-lactone .alpha.-Bromobutyrolactone 2(3H)-Furanone, 3-bromodihydro- 2-Bromo-.gamma.-butyrolactone 2-Bromo-4-butanolide 2-Bromobutyrolactone 3-Bromo-2-furanone 5061-21-2 NSC-56959 NSC56959 (C4H5BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures .alpha.-Bromo-.gamma.-butyrolactone .alpha.-Bromobutyric acid, .gamma.-lactone .alpha.-Bromobutyrolactone 2(3H)-Furanone, 3-bromodihydro- 2-Bromo-.gamma.-butyrolactone 2-Bromo-4-butanolide 2-Bromobutyrolactone 3-Bromo-2-furanone 5061-21-2 NSC-56959 NSC56959 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 | C4H5BrO2 |
| Molecular Weight | 164.99 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) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
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Recommended Standards
- 2-propenoic acid, 2-bromo-, methyl ester 4519-46-4 InChI=1/C4H5BrO2/c1-3(5)4(6)7-2/h1H2,2H methyl 2-bromoacrylate (CAS 4519-46-4)
- 72707-66-5 2-(Bromomethyl)propenoic acid 2-Propenoic acid, 2-(bromomethyl)- EINECS 276-774-0 (CAS 72707-66-5)
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