2610-11-9 7E49Q56PNB CI 28160 Direct red y81 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-, disodium salt Direct Red 81 C.I. Direct Red 81 (7CI) Disodium 7-benzamido-4-hydroxy-3-((4-((4-sulphonatophenyl)azo)phenyl)azo)naphthalene-2-sulphonate 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-,disodium salt 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-(2-(4-(2-(4-sulfophenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:2) C.I. 28160 C.I. Direct Red 81 (VAN) Airedale Red KD Aizen Primula Red 4BH Amanil Fast Red 8BL Amanil Fast Red 8BLW Belamine Fast Red 8BL Belamine Fast Red 8 BL Benzanil Fast Red K Benzo Fast Red 8BL Bordeaux EMBL Calcodur Red 8BL CCRIS 1475 Chloramine Fast Red K Chloramine Fast Red 5BL Chlorantine Fast Red Chlorantine Fast Red 5B (6CI) Chrome Leather Red 5B Dialuminous Red 4B Diaphtamine Light Red 4B Diazine Fast Red 8BK Diazo Light Red 8B Diazo Light Red 8BD Diazol Light Red 8B Diphenyl Fast 5BL Supra I Red Diphenyl Fast Red 5BL Diphenyl Fast Red 5BLN Direct Fast Red 2S Direct Fast Red 5B Direct Fast Red 8BL Direct Light Red M 8BL Direct Light Red 4B Direct Light Red 8B Direct Lightfast Red 2S Durazol Red 2B Durazol Red 2BP EINECS 220-028-9 Eliamina Red 8BL Fastolite Red 8BL Fastusol Red 4BA-CF Fenaluz Red 4B Helion Red 8B Hispaluz Red 8BL Japan Red No. 505 NSC 326198 Paranol Fast Red 8BL Pheno Fast Scarlet 9B Pontamine Fast Red 8BLX Pryamoi krasnyi svetoprochnyi 2S Pyrazol Fast Red 5BL Pyrazol Fast Red 8BL Pyrazoline Red 8BL Saturn Red B Sirius Red 4B Sirius Red 4BA Solantine Red 8BL Solar Red B Solius Red 4B Sumilight Red 4B Suprazo Red 4B Suprexcel Red 8BL Tertrodirect Fast Red 5B Tetramine Fast Red 8B Triantine Fast Red 4BN Triantine Light Red 4BN C.I. Direct Red 81 disodium salt UNII-7E49Q56PNB EC 220-028-9 C.I. Direct Red 81, disodium salt Solaminrot 4B CAS 2610-11-9

Description

The occurrence of 2610-11-9 7E49Q56PNB CI 28160 Direct red y81 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-, disodium salt Direct Red 81 C.I. Direct Red 81 (7CI) Disodium 7-benzamido-4-hydroxy-3-((4-((4-sulphonatophenyl)azo)phenyl)azo)naphthalene-2-sulphonate 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-,disodium salt 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-(2-(4-(2-(4-sulfophenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:2) C.I. 28160 C.I. Direct Red 81 (VAN) Airedale Red KD Aizen Primula Red 4BH Amanil Fast Red 8BL Amanil Fast Red 8BLW Belamine Fast Red 8BL Belamine Fast Red 8 BL Benzanil Fast Red K Benzo Fast Red 8BL Bordeaux EMBL Calcodur Red 8BL CCRIS 1475 Chloramine Fast Red K Chloramine Fast Red 5BL Chlorantine Fast Red Chlorantine Fast Red 5B (6CI) Chrome Leather Red 5B Dialuminous Red 4B Diaphtamine Light Red 4B Diazine Fast Red 8BK Diazo Light Red 8B Diazo Light Red 8BD Diazol Light Red 8B Diphenyl Fast 5BL Supra I Red Diphenyl Fast Red 5BL Diphenyl Fast Red 5BLN Direct Fast Red 2S Direct Fast Red 5B Direct Fast Red 8BL Direct Light Red M 8BL Direct Light Red 4B Direct Light Red 8B Direct Lightfast Red 2S Durazol Red 2B Durazol Red 2BP EINECS 220-028-9 Eliamina Red 8BL Fastolite Red 8BL Fastusol Red 4BA-CF Fenaluz Red 4B Helion Red 8B Hispaluz Red 8BL Japan Red No. 505 NSC 326198 Paranol Fast Red 8BL Pheno Fast Scarlet 9B Pontamine Fast Red 8BLX Pryamoi krasnyi svetoprochnyi 2S Pyrazol Fast Red 5BL Pyrazol Fast Red 8BL Pyrazoline Red 8BL Saturn Red B Sirius Red 4B Sirius Red 4BA Solantine Red 8BL Solar Red B Solius Red 4B Sumilight Red 4B Suprazo Red 4B Suprexcel Red 8BL Tertrodirect Fast Red 5B Tetramine Fast Red 8B Triantine Fast Red 4BN Triantine Light Red 4BN C.I. Direct Red 81 disodium salt UNII-7E49Q56PNB EC 220-028-9 C.I. Direct Red 81, disodium salt Solaminrot 4B is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

2610-11-9 7E49Q56PNB CI 28160 Direct red y81 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-, disodium salt Direct Red 81 C.I. Direct Red 81 (7CI) Disodium 7-benzamido-4-hydroxy-3-((4-((4-sulphonatophenyl)azo)phenyl)azo)naphthalene-2-sulphonate 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-,disodium salt 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-(2-(4-(2-(4-sulfophenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:2) C.I. 28160 C.I. Direct Red 81 (VAN) Airedale Red KD Aizen Primula Red 4BH Amanil Fast Red 8BL Amanil Fast Red 8BLW Belamine Fast Red 8BL Belamine Fast Red 8 BL Benzanil Fast Red K Benzo Fast Red 8BL Bordeaux EMBL Calcodur Red 8BL CCRIS 1475 Chloramine Fast Red K Chloramine Fast Red 5BL Chlorantine Fast Red Chlorantine Fast Red 5B (6CI) Chrome Leather Red 5B Dialuminous Red 4B Diaphtamine Light Red 4B Diazine Fast Red 8BK Diazo Light Red 8B Diazo Light Red 8BD Diazol Light Red 8B Diphenyl Fast 5BL Supra I Red Diphenyl Fast Red 5BL Diphenyl Fast Red 5BLN Direct Fast Red 2S Direct Fast Red 5B Direct Fast Red 8BL Direct Light Red M 8BL Direct Light Red 4B Direct Light Red 8B Direct Lightfast Red 2S Durazol Red 2B Durazol Red 2BP EINECS 220-028-9 Eliamina Red 8BL Fastolite Red 8BL Fastusol Red 4BA-CF Fenaluz Red 4B Helion Red 8B Hispaluz Red 8BL Japan Red No. 505 NSC 326198 Paranol Fast Red 8BL Pheno Fast Scarlet 9B Pontamine Fast Red 8BLX Pryamoi krasnyi svetoprochnyi 2S Pyrazol Fast Red 5BL Pyrazol Fast Red 8BL Pyrazoline Red 8BL Saturn Red B Sirius Red 4B Sirius Red 4BA Solantine Red 8BL Solar Red B Solius Red 4B Sumilight Red 4B Suprazo Red 4B Suprexcel Red 8BL Tertrodirect Fast Red 5B Tetramine Fast Red 8B Triantine Fast Red 4BN Triantine Light Red 4BN C.I. Direct Red 81 disodium salt UNII-7E49Q56PNB EC 220-028-9 C.I. Direct Red 81, disodium salt Solaminrot 4B (CAS 2610-11-9) is a high-purity analytical reference standard with the molecular formula C29H47N5O8S2Na and a molecular weight of 680.83 g/mol.

Based on its molecular formula C29H47N5O8S2Na, 2610-11-9 7E49Q56PNB CI 28160 Direct red y81 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-, disodium salt Direct Red 81 C.I. Direct Red 81 (7CI) Disodium 7-benzamido-4-hydroxy-3-((4-((4-sulphonatophenyl)azo)phenyl)azo)naphthalene-2-sulphonate 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-,disodium salt 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-(2-(4-(2-(4-sulfophenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:2) C.I. 28160 C.I. Direct Red 81 (VAN) Airedale Red KD Aizen Primula Red 4BH Amanil Fast Red 8BL Amanil Fast Red 8BLW Belamine Fast Red 8BL Belamine Fast Red 8 BL Benzanil Fast Red K Benzo Fast Red 8BL Bordeaux EMBL Calcodur Red 8BL CCRIS 1475 Chloramine Fast Red K Chloramine Fast Red 5BL Chlorantine Fast Red Chlorantine Fast Red 5B (6CI) Chrome Leather Red 5B Dialuminous Red 4B Diaphtamine Light Red 4B Diazine Fast Red 8BK Diazo Light Red 8B Diazo Light Red 8BD Diazol Light Red 8B Diphenyl Fast 5BL Supra I Red Diphenyl Fast Red 5BL Diphenyl Fast Red 5BLN Direct Fast Red 2S Direct Fast Red 5B Direct Fast Red 8BL Direct Light Red M 8BL Direct Light Red 4B Direct Light Red 8B Direct Lightfast Red 2S Durazol Red 2B Durazol Red 2BP EINECS 220-028-9 Eliamina Red 8BL Fastolite Red 8BL Fastusol Red 4BA-CF Fenaluz Red 4B Helion Red 8B Hispaluz Red 8BL Japan Red No. 505 NSC 326198 Paranol Fast Red 8BL Pheno Fast Scarlet 9B Pontamine Fast Red 8BLX Pryamoi krasnyi svetoprochnyi 2S Pyrazol Fast Red 5BL Pyrazol Fast Red 8BL Pyrazoline Red 8BL Saturn Red B Sirius Red 4B Sirius Red 4BA Solantine Red 8BL Solar Red B Solius Red 4B Sumilight Red 4B Suprazo Red 4B Suprexcel Red 8BL Tertrodirect Fast Red 5B Tetramine Fast Red 8B Triantine Fast Red 4BN Triantine Light Red 4BN C.I. Direct Red 81 disodium salt UNII-7E49Q56PNB EC 220-028-9 C.I. Direct Red 81, disodium salt Solaminrot 4B contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 680.83 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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