3,4-Dibromo-2-nitrothiophene CAS 35633-91-1
| CAS No. | 35633-91-1 |
| Molecular Formula | C4HBr2NO2S |
| Molecular Weight | 286.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3,4-Dibromo-2-nitrothiophene (CAS 35633-91-1), a certified reference material (molecular formula C4HBr2NO2S, MW 286.93 g/mol) for analytical method development and quality control.
Structurally, 3,4-Dibromo-2-nitrothiophene (C4HBr2NO2S) 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 286.93 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3,4-Dibromo-2-nitrothiophene 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 | C4HBr2NO2S |
| Molecular Weight | 286.93 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.) | 1967 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dibromo Standards
- 2,5-Dibromo-1,3-thiazole-4-carboxylic acid (CAS 943735-44-2)
- 2,5-dibromo-3-nitro-Thiophene (CAS 2160-51-2)
- 3,5-Dibromo-2-nitrothiophene (CAS 31845-01-9)
- 1,1-Dibromo-2-(4-cyanophenyl)ethene (CAS 131356-52-0)
- methyl 4,5-dibromo-1H-pyrrole-2-carboxylate (CAS 937-16-6)
- 1,4-DIBROMO-2-NITROBENZENE 2,5-DIBROMO-1-NITROBENZENE 2,5-DIBROMONITROBENZENE 3460-18-2 BC002655 RARECHEM FH 1W 0042 (CAS 3460-18-2)
- 4,6-Dibromo-2,3-difluoroaniline (CAS 1000574-59-3)
- 2,6-Dibromo-3,4-difluoroaniline (CAS 1000574-69-5)
Recommended Standards
- 3,5-Dichloro-4-iodotoluene (CAS 939990-12-2)
- 1,3-Dichloro-2-(iodomethyl)benzene (CAS 62031-35-0)
- 4,5-Dibromoisothiazole-3-carboxylic acid (CAS 4576-87-8)
- 1-(Dichloromethyl)-4-iodobenzene (CAS 467471-79-0)
- 2-AMINO-5-BROMO-3-CYANOPYRIDINE 2-AMINO-5-BROMO-3-PYRIDINECARBONITRILE 2-AMINO-5-BROMONICOTINONITRILE 2-AMINO-5-BROMOPYRIDINE-3-CARBONITRILE 709652-82-4 ABBYPHARMA AP-18-5662 BC004069 (CAS 709652-82-4)
- 3-((4-Methyl-2-nitrophenoxy)methyl)benzohydrazide (CAS 832737-80-1)
- 4-Bromophenethylamine hydrobromide 2-(4-bromophenyl)ethylamine hydrobromide 4-bromophenylethylamine hydrobromide 206559-45-7 (CAS 206559-45-7)
- Betamethasone impurity 53 (CAS CATO-C4X-143753)
- (3,5-Dibromo-1H-1,2,4-triazol-1-yl)(furan-2-yl)methanone (CAS 477869-77-5)
- (E)-{[1-methyl-3-phenyl-5-(phenylsulfanyl)-1H-pyrazol-4-yl]methylidene}[(4-methylphenyl)methoxy]amine (CAS 321998-31-6)
- 1-(2,3-dimethylphenyl)-1H-tetrazole-5-thiol (CAS 851721-95-4)
- 3-Methylthiazolidine-2,4-dione (CAS 16312-21-3)
- 1-((2-Carbamoylphenyl)sulfonyl)piperidine-4-carboxylic acid (CAS 929973-58-0)
- Peptide Impurity 15 (CAS 1227750-69-7)
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