2,4,5,7-Tetrabromo-3,4,5,6-tetrachlorofluorescein CAS 2134-15-8
| CAS No. | 2134-15-8 |
| Molecular Formula | C20H4Br4Cl4O5 |
| Molecular Weight | 785.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,4,5,7-Tetrabromo-3,4,5,6-tetrachlorofluorescein is closely related to a flavonoid core, a hydroxyl group, an ether linkage, chlorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,4,5,7-Tetrabromo-3,4,5,6-tetrachlorofluorescein (CAS 2134-15-8) is a high-purity analytical reference standard with the molecular formula C20H4Br4Cl4O5 and a molecular weight of 785.67 g/mol.
Based on its molecular formula C20H4Br4Cl4O5, 2,4,5,7-Tetrabromo-3,4,5,6-tetrachlorofluorescein contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 785.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 2,4,5,7-Tetrabromo-3,4,5,6-tetrachlorofluorescein 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 | C20H4Br4Cl4O5 |
| Molecular Weight | 785.67 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl/Br-containing |
Related Tetrabromo Standards
- 3,3'',5,5''-Tetrabromo-5'-(3,5-dibromophenyl)-1,1':3',1''-terphenyl (CAS 29102-67-8)
- 4,5,9,10-Tetrabromo-2,7-dioctylbenzo[lmn][3,8]phenanthroline-1,3,6,8-tetraone (CAS 954374-43-7)
- 2,3,16,17-Tetrabromo-6,7,9,10,12,13,20,21,23,24,26,27-dodecahydrodibenzo[b,n][1,4,7,10,13,16,19,22]octaoxacyclotetracosine (CAS 302929-56-2)
- Sodium 2',4',5',7'-tetrabromo-5-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate) (CAS 75350-45-7)
- 1,3,5,7-Tetrabromo-9,10-bis(phenylethynyl)anthracene (CAS 84870-40-6)
- 2',4',5',7'-Tetrabromo-3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-6-carboxylic acid (CAS 3561-24-8)
- 2,3,13,14-Tetrabromo-6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine (CAS 40100-11-6)
- 3,3',6,6'-Tetrabromo-9,9'-bicarbazole (CAS 18628-03-0)
Recommended Standards
- Phloxine B (free acid) (CAS 13473-26-2)
- 4-Methylumbelliferyl N-N-N-triacetyl-β-D-chitotrioside (CAS 53643-13-3)
- CYclen phenyl phosphonic ester (CAS 260793-46-2)
- PC Methyltetrazine-PEG4-NHS carbonate ester (CAS 2055736-28-0)
- Methyl 1-(4-bromophenyl)cyclohexane-1-carboxylate (CAS 1236357-63-3)
- tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-4-carboxylate (CAS 1023595-11-0)
- 4-(M-tolyl)-1h-pyrazol-5-amine (CAS 57999-12-9)
- N-(2,4-Dibromophenyl)-N-methyl-2,4-dinitro-6-(trifluoromethyl)aniline (CAS 63333-33-5)
- 5-bromothieno[2,3-d]thiazol-2-amine (CAS 1514592-14-3)
- Imidazo[4,5-c]pyrazole (CAS 251-05-8)
- 2-Amino-3-(thiazol-4-yl)propanoic acid (CAS 14717-97-6)
- 3-hydrazinylbutanoic acid dihydrochloride (CAS 1803607-18-2)
- (S)-Methyl 2-((tert-butoxycarbonyl)amino)-4-chlorobutanoate (CAS 1286768-63-5)
- (Leu31,Pro34)-Peptide YY (human) trifluoroacetate salt (CAS 179986-95-9)
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