2',7'-Dichlorofluorescein CAS 76-54-0
Purity >95%In StockPharmaceutical Standards
| CAS No. | 76-54-0 |
| Molecular Formula | C20H10Cl2O5 |
| Molecular Weight | 401.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2',7'-Dichlorofluorescein (CAS 76-54-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H10Cl2O5. Molecular weight: 401.20 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C20H10Cl2O5 |
| Molecular Weight | 401.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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-containing |
Related Dichlorofluorescein Standards
Recommended Standards
- 2-(6-amino-2-iodo-9-purinyl)-5-(hydroxymethyl)oxolane-3,4-diol 2-(6-azanyl-2-iodanyl-purin-9-yl)-5-(hydroxymethyl)oxolane-3,4-diol 35109-88-7 A822571 (CAS 35109-88-7)
- (5-Bromofuran-2-yl)(5-(furan-2-yl)-3-(2-hydroxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl)methanone (CAS 946378-90-1)
- 4',5'-Dichloro-3',6'-dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 2320-96-9)
- 5-[(4-methylpiperazin-1-yl)sulfonyl]pyridine-2-thiol (CAS 853574-40-0)
- 2’-Deoxy-2’-fluoroadenosine (CAS 64183-27-3)
- (E)-carboxyiminocarbamic acid 1,2-Diazenedicarboxylic acid 4910-62-7 NSC72982 (CAS 4910-62-7)
- 5-Amino-3,4-dimethylthieno[2,3-c]pyridazine-6-carbonitrile (CAS 1202459-07-1)
- 5-(Morpholine-4-carbonyl)pyridine-3-boronic acid, pinacol ester (CAS 1073371-92-2)
- 1-(5-Methylpyridin-2-yl)piperidin-3-amine hydrochloride (CAS 1185312-35-9)
- Liraglutide Impurity 14 TFA Salt (CAS CATO-C4X-199214)
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 13829788188 / jacky.chen@cato-chem.com