Methyl 3,4-dibromothiophene-2-carboxylate CAS 23122-65-8
| CAS No. | 23122-65-8 |
| Molecular Formula | C6H4Br2O2S |
| Molecular Weight | 299.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 3,4-dibromothiophene-2-carboxylate 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.
Methyl 3,4-dibromothiophene-2-carboxylate (CAS 23122-65-8), molecular formula C6H4Br2O2S and molecular weight 299.97 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Methyl 3,4-dibromothiophene-2-carboxylate (C6H4Br2O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. 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 299.97 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).
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.
Physical & Chemical Properties
| Molecular Formula | C6H4Br2O2S |
| Molecular Weight | 299.97 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 3,4-Dibromothiophene-2-carbohydrazide (CAS 1399659-27-8)
- Methyl 2,5-dibromothiophene-3-carboxylate (CAS 89280-91-1)
- Methyl 4,5-dibromothiophene-2-carboxylate (CAS 62224-24-2)
- Methyl 4,5-dibromothiophene-3-carboxylate (CAS 24647-83-4)
- 25373-20-0 3,4-Dibromothiophene-2,5-dicarboxaldehyde DTXSID80460643 (CAS 25373-20-0)
- 2,5-Dibromothiophene-3,4-dicarbaldehyde (CAS 57308-96-0)
- 4,5-Dibromothiophene-2-carbothioic O-acid (CAS 2484692-41-1)
- 2,5-Dibromothiophene-3,4-dicarbonitrile (CAS 1056841-63-4)
Recommended Standards
- Methyl 3,5-dibromo-2-carboxylate (CAS 62224-21-9)
- 4,5-Dibromo-3-methylthiophene-2-carboxylic acid (CAS 854626-32-7)
- 3,5-Dibromo-4-methylthiophene-2-carboxylic acid (CAS 856354-09-1)
- 3,4-Dibromo-5-methylthiophene-2-carboxylic acid (CAS 858840-46-7)
- (4-(Trifluoromethoxy)phenyl)(4-(trifluoromethyl)phenyl)methanone (CAS 34367-37-8)
- 3-Bromo-4-nitro-6-isopropyl (1H)Indazole (CAS 1000340-89-5)
- 1-Benzyl-5-fluoropyrimidine-2,4(1H,3H)-dione (CAS 4871-13-0)
- 2-({[2-Methyl-3-(trifluoromethyl)phenyl]amino}carbonyl)benzoic acid (CAS 2197063-21-9)
- tert-Butyl 2-(2-hydroxyethylsulfonyl)-ethylcarbamate (CAS 142604-13-5)
- Ethyl 6-methyl-2,3,4,9-tetrahydro-1H-carbazole-1-carboxylate (CAS 93027-28-2)
- 3-O-Methyl-DL-DOPA (hydrochloride) (CAS 91013-37-5)
- 2-[(4-pyridin-2-ylpiperazin-1-yl)methyl]-1H-benzimidazole (CAS 70006-24-5)
- 2-(2-Methylpropyl)-1,3-thiazole-5-carboxylic acid (CAS 1152614-38-4)
- Des-Ala28-Tirzepatide (CAS CATO-CPTD788945)
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