2-Bromo-3-methyl-5-nitrothiophene CAS 56182-39-9
| CAS No. | 56182-39-9 |
| Molecular Formula | C5H4BrNO2S |
| Molecular Weight | 222.06 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-3-methyl-5-nitrothiophene (CAS 56182-39-9) is a high-purity analytical reference standard with the molecular formula C5H4BrNO2S and a molecular weight of 222.06 g/mol.
Structurally, 2-Bromo-3-methyl-5-nitrothiophene (C5H4BrNO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 222.06 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C5H4BrNO2S |
| Molecular Weight | 222.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- Methyl 4-Bromo-1,3-thiazole-2-carboxylate (CAS 1025468-06-7)
- 2-Bromo-5-methyl-4-thiazolecarboxylic Acid (CAS 1194374-25-8)
- 4-Bromo-5-methylthiazole-2-carboxylic acid (CAS 1540130-95-7)
- 4-bromo-3-methoxy-1,2-thiazole-5-carbaldehyde (CAS 1955540-11-0)
- 2-Bromo-4-methyl-5-thiazolecarboxylic Acid (CAS 40003-41-6)
- 2-Bromo-5-methyl-3-nitrothiophene (CAS 82834-45-5)
- 3-Bromo-5-methyl-2-nitrothiophene (CAS 82834-44-4)
- 4-Bromo-3-methyl-1,2-thiazole-5-carboxylic acid (CAS 89284-01-5)
Recommended Standards
- 2-(2-Bromothiazol-4-yl)acetic acid (CAS 62557-07-7)
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- 3-Amino-4-bromothiophene-2-carboxylic acid (CAS 215927-34-7)
- (S)-5-Methyl-1-thia-4-azaspiro[5.5]undecane (CAS 2810846-29-6)
- 6,8-Dibromo-2-(3,4-dimethoxyphenyl)quinoline (CAS 861210-90-4)
- 6-(1,4-Diazepan-1-yl)-7h-purine (CAS 502133-47-3)
- 1-bromooctadecane (CAS 112-89-0)
- (Z)-3-Phenyl-4-((propylthio)methylene)isoxazol-5(4H)-one (CAS 61861-77-6)
- N'-(4-methylbenzoyl)thieno[2,3-b]quinoline-2-carbohydrazide (CAS 478079-40-2)
- N-Cyclopropyl-1-(3-fluorophenyl)methanesulfonamide (CAS 1420987-44-5)
- 7-Methylbenzo[b]thiophene-2-carboxylic acid (CAS 1505-61-9)
- 5-Chloro-2-(methylsulfinyl)benzo[d]thiazole (CAS 3507-50-4)
- Semaglutide impurity 97 (CAS CATO-C4X-222697)
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