CAS 15086-94-9: Red 21
Description:Red 21, also known by its chemical name as Acid Red 21, is a synthetic azo dye commonly used in various applications, including food, textiles, and cosmetics. It is characterized by its vibrant red color, which is attributed to the presence of azo functional groups (-N=N-). This compound is soluble in water, making it suitable for use in aqueous solutions. Red 21 is known for its stability under normal conditions, although it can be sensitive to light and heat, which may affect its color intensity over time. The dye is subject to regulatory scrutiny due to potential health concerns associated with azo dyes, particularly regarding their metabolism and possible carcinogenicity. As such, its use is regulated in many countries, especially in food products. In terms of chemical structure, Red 21 features a complex arrangement of aromatic rings, contributing to its color properties and reactivity. Overall, while Red 21 is widely utilized for its coloring properties, safety assessments and regulatory compliance are essential considerations in its application.
Formula:C20H8Br4O5
InChI:InChI=1S/C20H8Br4O5/c21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20/h1-6,25-26H
InChI key:InChIKey=DBZJJPROPLPMSN-UHFFFAOYSA-N
SMILES:O=C1OC2(C=3C=CC=CC13)C4=CC(Br)=C(O)C(Br)=C4OC5=C(Br)C(O)=C(Br)C=C52
- Synonyms:
- 2',4',5',7'-Tetrabromo-3',6'-dihydroxyspiro(isobenzofuran-1(3H),9- '-(9H)xanthen)-3-one
- 2',4',5',7'-Tetrabromofluorescein
- 2',4',5',7'-tetrabromo-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one
- 2-(2,4,5,7-tetrabromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid
- 2′,4′,5′,7′-Tetrabromo-3′,6′-dihydroxyspiro[2-benzofuran-3,9′-xanthene]-1-one
- 2′,4′,5′,7′-Tetrabromo-3′,6′-dihydroxyspiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one
- 2′,4′,5′,7′-Tetrabromofluorescein
- 3,6-Dihydroxy-2,4,5,7-tetrabromospiro(xanthene-9,3'-phthalide)
- Ami 5
- Bromeosin
- See more synonyms
- Bromoeosin
- D & C Red no. 21
- D and C Red No. 21
- D&C Red 21
- Eosin Y spirit soluble
- Eosin Yellowish
- Eosin acid
- Eosine acid
- Fluorescein, 2',4',5',7'-tetrabromo-
- Fluorescein, 2',4',5',7'-tetrabromo- (VAN)
- Fluorescein, 2′,4′,5′,7′-tetrabromo-
- Japan Red 223
- Japan Red No. 223
- NSC 244436
- Red 21
- Red No. 223
- Solvent Red 43
- Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 2',4',5',7'-tetrabromo-3',6'-dihydroxy-
- Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 2′,4′,5′,7′-tetrabromo-3′,6′-dihydroxy-
- disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate
![Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 2',4',5',7'-tetrabromo-3',6'-dihydroxy-](https://static.cymitquimica.com/products/IN/thumb/DA001MWH.jpg)
