| 2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid |
| 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)-2-naphthalenecarboxylic acid |
| Patton and Reeder's Reagent |
| Cal Red |
| Calcon-carboxylic Acid |
| 2-Naphthalenecarboxylic acid,3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]- |
| 2-Hydroxy[(2-hydroxy-4-sulpho-1-naphthalene)azo]naphthalene-3-carboxylic acid |
| Calconcarboxylic acid |
| 3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]-2-Naphthalenecarboxylic acid |
| 2-Hydroxy[(2-hydroxy-4-sulpho-1-naphthalene) azo]naphthalene-3-carboxylic acid |
| 2-naphthalenecarboxylic acid, 3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)az |
| o]- |
| 3-hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene- 2-carboxylic acid |
| Calcon carboxylic acid |