HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 80708Generated: November 3, 2026
1,7-Naphthalenedisulfonic acid, 4-(benzoylamino)-5-hydroxy-
Einecs 228-838-4 · 4-Benzamido-5-hydroxy-1,7-naphthalenedisulfonic acid · 4-benzamido-5-hydroxynaphthalene-1,7-disulfonic acid · 4-Benzoylamino-5-hydroxy-1,7-naphthalenedisulfonic acid · 5-Hydroxy-4-(benzoylamino)-1,7-naphthalenedisulfonic acid · 4-(Benzoylamino)-5-hydroxy-1,7-naphthalenedisulfonic acid · 4-(benzoylamino)-5-hydroxynaphthalene-1,7-disulphonic acid · 1,7-Naphthalenedisulfonic acid, 4-(benzoylamino)-5-hydroxy-
https://huagongshe.com/en/chemical/80708
Identifiers & Physical Properties
| CAS No. | 6361-49-5 |
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| Molecular formula | C17H13NO8S2 |
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| Average molar mass | 423.4 g/mol |
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| Monoisotopic mass | 423.00825872 g/mol |
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| SMILES | O=C(Nc1ccc(S(=O)(=O)O)c2cc(S(=O)(=O)O)cc(O)c12)c1ccccc1 |
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| InChIKey | BUVOCOQOYNGMCO-UHFFFAOYSA-N |
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| PubChem CID | 80708 |
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| EC No. | 228-838-4 |
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| DTXSID | DTXSID50884276 |
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Chemical & Physical Properties
| XLogP | 1.7 |
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| Topological polar surface area | 175 |
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| Hydrogen bond donors | 4 |
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| Hydrogen bond acceptors | 8 |
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| Rotatable bonds | 4 |
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| Heavy atoms | 28 |
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| Formal charge | 0 |
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| Complexity | 779 |
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| EPA Substance Registry System | 1,7-Naphthalenedisulfonic acid, 4-(benzoylamino)-5-hydroxy- (6361-49-5) |
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| TSCA inventory status | TSCA listed |
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Safety & Regulations
| TSCA inventory status | TSCA listed |
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Applications & Uses
Uses
4-Benzamido-5-hydroxynaphthalene-1,7-disulfonic acid [6361-49-5], N-benzoyl K acid, is produced by reacting purified K acid with benzoyl chloride in aqueous alkaline sodium carbonate solution at 35 – 40 ℃ for 18 h, followed by heating for 1 h at 90℃ to hydrolyze the O-benzoyl derivative (yield 80 %). It is used to produce C.I. Acid Red 133, C.I. Acid Red 157, and C.I. Mordant Red 21.
