5-Bromo-2-hydroxybenzohydrazide CAS 39635-10-4
| CAS No. | 39635-10-4 |
| Molecular Formula | C7H7BrN2O2 |
| Molecular Weight | 231.05 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 5-Bromo-2-hydroxybenzohydrazide.
5-Bromo-2-hydroxybenzohydrazide (CAS 39635-10-4), molecular formula C7H7BrN2O2 and molecular weight 231.05 g/mol, is a CATO reference standard with documented purity and traceability.
5-Bromo-2-hydroxybenzohydrazide (C7H7BrN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, 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.
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 manufactures 5-Bromo-2-hydroxybenzohydrazide 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 | C7H7BrN2O2 |
| Molecular Weight | 231.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1968 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 5-Bromo-2-(methylamino)nicotinic acid (CAS 610279-81-7)
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- 5-Bromo-4-methyl-2-nitroaniline (CAS 40371-63-9)
- (5-(Dimethylamino)-2-phenyloxazol-4-yl)triphenylphosphonium iodide (CAS 55650-17-4)
- [2-(Tetrahydro-2-furanylmethoxy)-3-pyridinyl]methanamine (CAS 1016530-10-1)
- Ethyl methyl(2-oxo-2-(phenylamino)ethyl)carbamate (CAS 1197718-17-4)
- 3-Hydroxyheptadecanoic Acid Methyl Ester (CAS 112538-92-8)
- (S)-2-Amino-N-cyclopropyl-N-((6-methoxypyridazin-3-yl)methyl)propanamide (CAS 1354008-61-9)
- 1-(1-Phenyl-2-(trimethylsilyl)ethyl)-1H-benzo[d][1,2,3]triazole (CAS 219700-98-8)
- 7-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,4-dihydro-1H-isoquinoline-2-carboxylic Acid tert-Butyl Ester (CAS 937048-76-5)
- 4-Bromo-3-nitrobenzaldehyde (CAS 163596-75-6)
- (E)-4-(dimethylamino)benzaldehyde O-(4-fluorobenzoyl) oxime (CAS 306730-01-8)
- Hexapeptide-11 (CAS 100684-36-4)
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