Naphthalene sulfonic acids and derivatives

Hydroxy Naphthol Blue, Disodium Salt, Pure, ACROS Organics™

CAS: 165660-27-5 Molecular Formula: C20H12N2Na2O11S3 Molecular Weight (g/mol): 600.495 MDL Number: MFCD00004075 InChI Key: LXJHFXHZWYBBKJ-LUUCHEBKSA-N Synonym: 2,2'-Dihydroxy-1,1'-azonaphthalene-3',4,6'-trisulfonic acid disodium salt PubChem CID: 131849366 IUPAC Name: 3-hydroxy-4-[(2Z)-2-(2-oxo-4-sulfonaphthalen-1-ylidene)hydrazinyl]naphthalene-2,7-disulfonic acid;sodium SMILES: C1=CC=C2C(=C1)C(=CC(=O)C2=NNC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)O)S(=O)(=O)O)S(=O)(=O)O.[Na].[Na]

Honeywell Fluka™ Hydroxynaphthol Blue, Indicator for Metal Titration, Honeywell™

CAS: 63451-35-4 Molecular Formula: C20H11N2Na3O11S3 Molecular Weight (g/mol): 620.46 MDL Number: MFCD00036393 InChI Key: JQECMNGWLIFQLL-UHFFFAOYSA-K PubChem CID: 44134769 IUPAC Name: trisodium;3-hydroxy-4-[2-(2-oxo-4-sulfonatonaphthalen-1-ylidene)hydrazinyl]naphthalene-2,7-disulfonate SMILES: C1=CC=C2C(=C1)C(=CC(=O)C2=NNC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]

Suramin hexasodium salt, 98%, ACROS Organics™

CAS: 129-46-4 Molecular Formula: C51H34N6Na6O23S6 Molecular Weight (g/mol): 1429.1 MDL Number: MFCD00210217 InChI Key: VAPNKLKDKUDFHK-UHFFFAOYSA-H Synonym: suramin sodium, suramin hexasodium, suramin hexasodium salt, suramin sodium salt, antrypol, moranyl, naganinum, naphuride sodium, fourneau 309, suramine sodium salt PubChem CID: 8514 IUPAC Name: hexasodium;8-[[4-methyl-3-[[3-[[3-[[2-methyl-5-[(4,6,8-trisulfonatonaphthalen-1-yl)carbamoyl]phenyl]carbamoyl]phenyl]carbamoylamino]benzoyl]amino]benzoyl]amino]naphthalene-1,3,5-trisulfonate SMILES: CC1=C(C=C(C=C1)C(=O)NC2=C3C(=CC(=CC3=C(C=C2)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])NC(=O)C4=CC(=CC=C4)NC(=O)NC5=CC=CC(=C5)C(=O)NC6=C(C=CC(=C6)C(=O)NC7=C8C(=CC(=CC8=C(C=C7)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])C.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+]

4-Amino-3-hydroxy-1-naphthalenesulfonic acid, 95%, Acros Organics

CAS: 116-63-2 Molecular Formula: C10H9NO4S Molecular Weight (g/mol): 239.25 MDL Number: MFCD00004019 InChI Key: RXCMFQDTWCCLBL-UHFFFAOYSA-N Synonym: 1-amino-2-naphthol-4-sulfonic acid, 4-amino-3-hydroxy-1-naphthalenesulfonic acid, 1-amino-4-sulfo-2-naphthol, 1,2,4-acid, unii-w46sk3p33g, 1-naphthalenesulfonic acid, 4-amino-3-hydroxy, 4-amino-3-hydroxynaphthalene-1-sulphonic acid, 4-amino-3-hydroxynaphthalenesulfonic acid, 1,2,4-aminonaphtholsulfonic acid, 2-hydroxy-4-sulfo-1-naphthylamine PubChem CID: 8316 ChEBI: CHEBI:19024 IUPAC Name: 4-amino-3-hydroxynaphthalene-1-sulfonic acid SMILES: C1=CC=C2C(=C1)C(=CC(=C2N)O)S(=O)(=O)O

4,5-Dihydroxynaphthalene-2,7-disulfonic acid, disodium salt dihydrate, ACS reagent, ACROS Organics™

CAS: 5808-22-0 Molecular Formula: C10H6Na2O8S2·2H2O Molecular Weight (g/mol): 400.28 MDL Number: MFCD00150612 InChI Key: BAXLVCPBGWZLAU-UHFFFAOYSA-N Synonym: chromotropic acid sodium salt, 4,5-dihydroxy-2,7-naphthalenedisulfonate, di sodium; 4,5-dihydroxy-7-sulfo-naphthalene-2-sulfonic acid, 4,5-dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate, acs 5g PubChem CID: 124202444 IUPAC Name: 4,5-dihydroxynaphthalene-2,7-disulfonic acid;sodium;dihydrate SMILES: C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)O)O)S(=O)(=O)O.O.O.[Na].[Na]

Dansyl Chloride 98%, ACROS Organics™

CAS: 605-65-2 Molecular Formula: C12H12ClNO2S Molecular Weight (g/mol): 269.743 MDL Number: MFCD00003985 InChI Key: XPDXVDYUQZHFPV-UHFFFAOYSA-N Synonym: 5-Dimethylamino-1-naphthalenesulfonyl chloride PubChem CID: 11801 ChEBI: CHEBI:51907 IUPAC Name: 5-(dimethylamino)naphthalene-1-sulfonyl chloride SMILES: CN(C)C1=CC=CC2=C1C=CC=C2S(=O)(=O)Cl

Amaranth, 85%, Acros Organics

CAS: 915-67-3 Molecular Formula: C20H11N2Na3O10S3 Molecular Weight (g/mol): 604.461 MDL Number: MFCD00004076 InChI Key: VOBHRQFELWTZFS-UHFFFAOYSA-K Synonym: Acid Red 27, C.I. 16185 PubChem CID: 6364527 IUPAC Name: trisodium;3-oxo-4-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]naphthalene-2,7-disulfonate SMILES: C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]

Alfa Aesar™ 8-Anilinonaphthalene-1-sulfonic acid ammonium salt, 98%

CAS: 28836-03-5 Molecular Formula: C16H16N2O3S Molecular Weight (g/mol): 316.375 MDL Number: MFCD00012560 InChI Key: IPBNQYLKHUNLQE-UHFFFAOYSA-N Synonym: ammonium 8-phenylamino naphthalene-1-sulfonate, 8-anilino-1-naphthalenesulfonic acid ammonium salt, unii-gt7mn8dkd7, gt7mn8dkd7, ammonium 8-anilino-1-naphthalenesulfonate, 1-naphthalenesulfonic acid, 8-phenylamino-, monoammonium salt, 1-naphthalenesulfonic acid, 8-phenylamino-, ammonium salt 1:1, ansa, 1-anilinonaphthalene-8-sulfonic acid ammonium salt, 82-76-8 parent PubChem CID: 120066 IUPAC Name: azanium;8-anilinonaphthalene-1-sulfonate SMILES: C1=CC=C(C=C1)NC2=CC=CC3=C2C(=CC=C3)S(=O)(=O)[O-].[NH4+]

Hydroxy naphthol blue disodium salt, For ACS analysis, MP Biomedicals™

CAS: 165660-27-5 Molecular Formula: C20H14N2Na2O11S3 Molecular Weight (g/mol): 600.495 InChI Key: LXJHFXHZWYBBKJ-LUUCHEBKSA-N Synonym: `-(2-naphtholazo-3, 6-disulfonic acid)-2-naphthol-4-sulfonic acid trisodium salt, calcium indicator on sodium chloride PubChem CID: 131849366 IUPAC Name: 3-hydroxy-4-[(2Z)-2-(2-oxo-4-sulfonaphthalen-1-ylidene)hydrazinyl]naphthalene-2,7-disulfonic acid;sodium SMILES: C1=CC=C2C(=C1)C(=CC(=O)C2=NNC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)O)S(=O)(=O)O)S(=O)(=O)O.[Na].[Na]

Alfa Aesar™ Naphthalene-2-sulfonic acid hydrate, 94%

CAS: 76530-12-6 Molecular Formula: C10H10O4S Molecular Weight (g/mol): 226.246 MDL Number: MFCD00149271 InChI Key: HKGOFWIZZIYCOS-UHFFFAOYSA-N Synonym: naphthalene-2-sulfonic acid hydrate, 2-naphthalenesulfonic acid hydrate, 2-naphthalenesulfonic acid monohydrate, 2-naphthalenesulfonicacid, hydrate 1:1, kyselina2-naftalensulfonova, acmc-20aj4s, ksc352o8d, c10h8so3.h2o, 2-naphthalene-sulfonic acid monohydrate, naphthalene-2-sulphonic acid monohydrate PubChem CID: 20499058 IUPAC Name: naphthalene-2-sulfonic acid;hydrate SMILES: C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)O.O

Alfa Aesar™ 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate, ACS

CAS: 5808-22-0 Molecular Formula: C10H12Na2O10S2 Molecular Weight (g/mol): 402.296 MDL Number: MFCD00150612 InChI Key: BAXLVCPBGWZLAU-UHFFFAOYSA-N Synonym: chromotropic acid sodium salt, 4,5-dihydroxy-2,7-naphthalenedisulfonate, di sodium; 4,5-dihydroxy-7-sulfo-naphthalene-2-sulfonic acid, 4,5-dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate, acs 5g PubChem CID: 124202444 IUPAC Name: 4,5-dihydroxynaphthalene-2,7-disulfonic acid;sodium;dihydrate SMILES: C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)O)O)S(=O)(=O)O.O.O.[Na].[Na]

Alfa Aesar™ Naphthalene-2-sulfonic acid, 98%

CAS: 120-18-3 Molecular Formula: C10H8O3S Molecular Weight (g/mol): 208.231 MDL Number: MFCD00004089 InChI Key: KVBGVZZKJNLNJU-UHFFFAOYSA-N Synonym: 2-naphthalenesulfonic acid, beta-naphthylsulfonic acid, beta-naphthalenesulfonic acid, naphthalene-2-sulphonic acid, kyselina 2-naftalensulfonova, 2-naphthalene sulfonic acid, unii-o9s4k2s25e, 2-naphthylsulfonic acid, kyselina 2-naftalensulfonova czech, 2-naphthalenesulfonic acid, monohydrate PubChem CID: 8420 ChEBI: CHEBI:44229 IUPAC Name: naphthalene-2-sulfonic acid SMILES: C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)O

2-Naphthalenesulfonyl chloride, 97%, ACROS Organics™

CAS: 93-11-8 Molecular Formula: C10H7ClO2S Molecular Weight (g/mol): 226.68 InChI Key: OPECTNGATDYLSS-UHFFFAOYSA-N Synonym: 2-naphthalenesulfonyl chloride, 2-naphthylsulfonyl chloride, beta-naphthalenesulfonyl chloride, naphthalene-2-sulfonic acid chloride, .beta.-naphthalenesulfochloride, naphthalene-2-sulphonyl chloride, 2-naphthalenesulfonylchloride, 2-naphthalenylsulfonyl chloride, 2-naphthalene sulfonyl chloride, .beta.-naphthalenesulfonyl chloride PubChem CID: 7125 IUPAC Name: naphthalene-2-sulfonyl chloride SMILES: C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)Cl

8-Amino-1-naphthol-3,6-disulfonic acid, monosodium salt monohydrate, 80%, tech., Acros Organics

CAS: 5460-09-3 Molecular Formula: C10H8NNaO7S2·H2O Molecular Weight (g/mol): 359.32 MDL Number: MFCD00150460 InChI Key: QPILZZVXGUNELN-UHFFFAOYSA-M Synonym: h acid sodium, 1-amino-8-naphthol-3,6-disulfonic acid monosodiumsalt, 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid 2-sodium salt PubChem CID: 102116466 IUPAC Name: sodium;8-amino-3,6-disulfonaphthalen-1-olate SMILES: C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)N)[O-])S(=O)(=O)O.[Na+]

7-Amino-1,3-naphthalenedisulfonic acid, Tech., ACROS Organics™

CAS: 86-65-7 Molecular Formula: C10H9NO6S2 Molecular Weight (g/mol): 303.29 MDL Number: MFCD00003991 InChI Key: CMOLPZZVECHXKN-UHFFFAOYSA-N Synonym: amido-g-acid, 7-amino-1,3-naphthalenedisulfonic acid, amino-g-acid, 1,3-naphthalenedisulfonic acid, 7-amino, amino-g acid, 2-amino-6,8-disulfonaphthalene, unii-7c482fx29k, 2-aminonaphthalene-6,8-disulfonic acid, 2-naphthylamine-6,8-disulfonic acid, beta-naphthylamine-6,8-disulfonic acid PubChem CID: 6851 IUPAC Name: 7-aminonaphthalene-1,3-disulfonic acid SMILES: C1=CC(=CC2=C(C=C(C=C21)S(=O)(=O)O)S(=O)(=O)O)N

2-Naphthalenesulfonic acid hydrate, 90%, Technical, ACROS Organics™

CAS: 76530-12-6 Molecular Formula: C10H8O3S·xH2O Molecular Weight (g/mol): 208.24 MDL Number: MFCD00149271 InChI Key: HKGOFWIZZIYCOS-UHFFFAOYSA-N Synonym: naphthalene-2-sulfonic acid hydrate, 2-naphthalenesulfonic acid hydrate, 2-naphthalenesulfonic acid monohydrate, 2-naphthalenesulfonicacid, hydrate 1:1, kyselina2-naftalensulfonova, acmc-20aj4s, ksc352o8d, c10h8so3.h2o, 2-naphthalene-sulfonic acid monohydrate, naphthalene-2-sulphonic acid monohydrate PubChem CID: 20499058 IUPAC Name: naphthalene-2-sulfonic acid;hydrate SMILES: C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)O.O

Xylidine Ponceau 2R, pure, ACROS Organics™

CAS: 3761-53-3 Molecular Formula: C18H14N2Na2O7S2 Molecular Weight (g/mol): 480.417 MDL Number: MFCD00003897 InChI Key: YJVBLROMQZEFPA-UHFFFAOYSA-L Synonym: 4-(2,4-Dimethylphenylazo)-3-hydroxy-2,7-naphthalenedisulfonic acid, disodium salt, C.I. 16150, 4-(2, 4-Dimethylphenylazo)-3-hydroxy-2, 7-naphthalenedisulfonic acid, Ponceau G, R, 2R PubChem CID: 102092631 ChEBI: CHEBI:82369 IUPAC Name: disodium;5-[(2,4-dimethylphenyl)diazenyl]-6-oxido-7-sulfonaphthalene-2-sulfonate SMILES: CC1=CC(=C(C=C1)N=NC2=C3C=CC(=CC3=CC(=C2[O-])S(=O)(=O)O)S(=O)(=O)[O-])C.[Na+].[Na+]

4,5-Dihydroxynaphthalene-2,7-disulfonic Acid, Disodium Salt Dihydrate, 98%, ACROS Organics™

CAS: 5808-22-0 Molecular Formula: C10H6Na2O8S2·2H2O Molecular Weight (g/mol): 400.28 MDL Number: MFCD00150612 InChI Key: BAXLVCPBGWZLAU-UHFFFAOYSA-N Synonym: chromotropic acid sodium salt, 4,5-dihydroxy-2,7-naphthalenedisulfonate, di sodium; 4,5-dihydroxy-7-sulfo-naphthalene-2-sulfonic acid, 4,5-dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate, acs 5g PubChem CID: 124202444 IUPAC Name: 4,5-dihydroxynaphthalene-2,7-disulfonic acid;sodium;dihydrate SMILES: C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)O)O)S(=O)(=O)O.O.O.[Na].[Na]

Alfa Aesar™ 5-Aminonaphthalene-1-sulfonic acid, tech. 90%

CAS: 84-89-9 Molecular Formula: C10H9NO3S Molecular Weight (g/mol): 223.246 MDL Number: MFCD00014315 InChI Key: DQNAQOYOSRJXFZ-UHFFFAOYSA-N Synonym: 5-amino-1-naphthalenesulfonic acid, 1-naphthylamine-5-sulfonic acid, laurent acid, 1-naphthalenesulfonic acid, 5-amino, 1-amino-5-sulfonaphthalene, laurent's acid, 5-naphthylamine-1-sulfonic acid, 1-amino-5-naphthalenesufonic acid, 1-aminonaphthalene-5-sulfonic acid, unii-w70wc365od PubChem CID: 6793 IUPAC Name: 5-aminonaphthalene-1-sulfonic acid SMILES: C1=CC2=C(C=CC=C2S(=O)(=O)O)C(=C1)N

1,3,6-Naphthalenetrisulfonic acid, sodium salt hydrate, mixture of isomers, ACROS Organics™

CAS: 19437-42-4 Molecular Formula: xNa·xH2O Molecular Weight (g/mol): 368.36 MDL Number: MFCD00149263 InChI Key: BERQWQSQOIEUMA-UHFFFAOYSA-M Synonym: 1,3,6-naphthalenetrisulfonic acid, sodium salt, 1,3,6-naphthalenetrisulfonic acid, sodium salt 1:? PubChem CID: 73555608 IUPAC Name: sodium;5,7-disulfonaphthalene-2-sulfonate SMILES: C1=CC2=C(C=C(C=C2C=C1S(=O)(=O)[O-])S(=O)(=O)O)S(=O)(=O)O.[Na+]

Alfa Aesar™ Naphthalene-2-sulfonic acid sodium salt, 98%, may cont. up to 10% residual inorganic salts and water

CAS: 532-02-5 Molecular Formula: C10H7NaO3S Molecular Weight (g/mol): 230.213 MDL Number: MFCD00064186 InChI Key: YWPOLRBWRRKLMW-UHFFFAOYSA-M Synonym: sodium 2-naphthalenesulfonate, sodium naphthalene-2-sulfonate, 2-naphthalenesulfonic acid sodium salt, 2-naphthalenesulfonic acid, sodium salt, unii-r5f0ctd2oj, sodium-2-naphthalenesulfonate, sodium naphthalene-6-sulfonate, 2-naphthalene sulfonic acid sodium salt, sodium beta-naphthalenesulfonate, sodium naphthalene-2-sulphonate PubChem CID: 23661868 IUPAC Name: sodium;naphthalene-2-sulfonate SMILES: C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)[O-].[Na+]

Alfa Aesar™ 2-Aminonaphthalene-1-sulfonic acid, 98%

CAS: 81-16-3 Molecular Formula: C10H9NO3S Molecular Weight (g/mol): 223.246 MDL Number: MFCD00003988 InChI Key: GWIAAIUASRVOIA-UHFFFAOYSA-N Synonym: tobias acid, 2-amino-1-naphthalenesulfonic acid, 2-naphthylamine-1-sulfonic acid, 1-naphthalenesulfonic acid, 2-amino, kyselina tobiasova, unii-f9qkw1fce0, kyselina 2-naftylamin-1-sulfonova, kyselina tobiasova czech, ccris 9048, 2-aminonaphthalene-1-sulphonic acid PubChem CID: 6670 IUPAC Name: 2-aminonaphthalene-1-sulfonic acid SMILES: C1=CC=C2C(=C1)C=CC(=C2S(=O)(=O)O)N

Alfa Aesar™ Arsenazo III

CAS: 1668-00-4 Molecular Formula: C22H18As2N4O14S2 Molecular Weight (g/mol): 776.363 MDL Number: MFCD00036695 InChI Key: TVMZRHVOFZTNET-RIRMOVKSSA-N Synonym: arsenazo iii, arsenazo iii sodium salt, 2,2'-1, 8-dihydroxy-3,6-disulfo-2, 7-naphthalene-bis azo dibenzenearsonic acid, 2,7-bis 2-arsonophenylazo-1, 8-dihydroxy-3, 6-naphthalene disulfonic acid, 2,7-bis 2-arsonophenylazo-1,8-dihydroxynaphthalene-3,6-disulfonic acid, 2,7-bis 2-arsonophenylazo chromotropic acid, 2,2'-1,8-dihydroxy-3,6-disulfonaphthylene-2,7-bisazo bisbenzenearsonic acid, 3,6-bis 2-2-arsonophenyl diazen-1-yl-4,5-dihydroxynaphthalene-2,7-disulfonic acid, 3,6-bis 2-2-arsonophenyl diazenyl-4,5-dihydroxy-2,7-naphthalenedisulfonic acid, 3,6-bis 2-2-arsonophenyl hydrazin-1-ylidene-4,5-dioxonaphthalene-2,7-disulfonic acid PubChem CID: 9810878 IUPAC Name: (3Z,6E)-3,6-bis[(2-arsonophenyl)hydrazinylidene]-4,5-dioxonaphthalene-2,7-disulfonic acid SMILES: C1=CC=C(C(=C1)NN=C2C(=CC3=C(C2=O)C(=O)C(=NNC4=CC=CC=C4[As](=O)(O)O)C(=C3)S(=O)(=O)O)S(=O)(=O)O)[As](=O)(O)O

Alfa Aesar™ Ethyl mesitylacetate, 97%

CAS: 5460-08-2 Molecular Formula: C10H8NNaO7S2 Molecular Weight (g/mol): 341.28 MDL Number: MFCD00051916 InChI Key: QPILZZVXGUNELN-UHFFFAOYSA-M Synonym: h acid sodium, 1-amino-8-naphthol-3,6-disulfonic acid monosodiumsalt, 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid 2-sodium salt PubChem CID: 102116466 IUPAC Name: sodium;8-amino-3,6-disulfonaphthalen-1-olate SMILES: C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)N)[O-])S(=O)(=O)O.[Na+]

Alfa Aesar™ 8-Anilinonaphthalene-1-sulfonic acid, 95%

CAS: 82-76-8 Molecular Formula: C16H13NO3S Molecular Weight (g/mol): 299.344 MDL Number: MFCD00003998 InChI Key: FWEOQOXTVHGIFQ-UHFFFAOYSA-N Synonym: 8-anilino-1-naphthalenesulfonic acid, phenylperi acid, n-phenyl peri acid, 8-phenylamino naphthalene-1-sulfonic acid, 1-anilino-8-naphthalenesulfonate, 1-anilino-8-naphthalenesulfonic acid, peri acid, phenyl, 1-naphthalenesulfonic acid, 8-phenylamino, 1-anilinonaphthalene-8-sulfonic acid, 8-anilino-1-naphthalene sulfonic acid PubChem CID: 1369 ChEBI: CHEBI:39708 IUPAC Name: 8-anilinonaphthalene-1-sulfonic acid SMILES: C1=CC=C(C=C1)NC2=CC=CC3=C2C(=CC=C3)S(=O)(=O)O

Alfa Aesar™ Naphthalene-1-sulfonic acid hydrate, 98%

CAS: 6036-48-2 Molecular Formula: C10H12O5S Molecular Weight (g/mol): 244.261 MDL Number: MFCD00003987 InChI Key: GBWFYBZWCZOBLI-UHFFFAOYSA-N Synonym: naphthalene-1-sulfonic acid dihydrate, 1-naphthalenesulfonic acid dihydrate, naphthalene-1-sulfonic acid hydrate PubChem CID: 71431272 IUPAC Name: naphthalene-1-sulfonic acid;dihydrate SMILES: C1=CC=C2C(=C1)C=CC=C2S(=O)(=O)O.O.O

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