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Amaranth free acid (Acid Red 27 free acid; Azorubin S free acid; FD & C Red Dye No. 2 free acid) serves as a versatile dye utilized across various fields. This dye is crucial in biological experiments for observing and analyzing cell structures, tracking biomolecules, evaluating cell functions, differentiating cell types, detecting biomolecules, studying tissue pathology, and monitoring microorganisms. Its usage extends from fundamental scientific research to clinical diagnostics. Additionally, Amaranth free acid is employed in traditional applications like textile dyeing and in innovative areas including functional textile processing, food pigments, and dye-sensitized solar cells.

| Pack Size | Price | Availability | Quantity | 
|---|---|---|---|
| 10 mg | Inquiry | Inquiry | |
| 50 mg | Inquiry | Inquiry | 
| Description | Amaranth free acid (Acid Red 27 free acid; Azorubin S free acid; FD & C Red Dye No. 2 free acid) serves as a versatile dye utilized across various fields. This dye is crucial in biological experiments for observing and analyzing cell structures, tracking biomolecules, evaluating cell functions, differentiating cell types, detecting biomolecules, studying tissue pathology, and monitoring microorganisms. Its usage extends from fundamental scientific research to clinical diagnostics. Additionally, Amaranth free acid is employed in traditional applications like textile dyeing and in innovative areas including functional textile processing, food pigments, and dye-sensitized solar cells. | 
| Synonyms | Azorubin S free acid, Acid Red 27 free acid | 
| Molecular Weight | 538.53 | 
| Formula | C20H14N2O10S3 | 
| Cas No. | 642-59-1 | 
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. | 
 For example, your dosage is 10 mg/kg Each animal weighs 20 g, and the dosage volume is 100 μL .
For example, your dosage is 10 mg/kg Each animal weighs 20 g, and the dosage volume is 100 μL .  A total of 10 animals were administered, and the formula you used is 5%
 A total of 10 animals were administered, and the formula you used is 5%  DMSO+30% PEG300+5% Tween 80+60% Saline/PBS/ddH2O. So your working solution concentration is 2 mg/mL。
DMSO+30% PEG300+5% Tween 80+60% Saline/PBS/ddH2O. So your working solution concentration is 2 mg/mL。 (mother liquor concentration of 40 mg/mL), if you need to configure a concentration that exceeds the solubility of the product, please contact us first.
 (mother liquor concentration of 40 mg/mL), if you need to configure a concentration that exceeds the solubility of the product, please contact us first. main solution, add 300 μLPEG300
 main solution, add 300 μLPEG300 mix well and clarify, then add 50 more μL Tween 80, mix well and clarify, then add 600 more μLSaline/PBS/ddH2O
 mix well and clarify, then add 50 more μL Tween 80, mix well and clarify, then add 600 more μLSaline/PBS/ddH2O mix well and clarify
 mix well and clarify
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