Organic Building Blocks

Acetone, 99.8%, Extra Dry, AcroSeal™, ACROS Organics™

CAS: 67-64-1 Molecular Formula: C3H6O Molecular Weight (g/mol): 58.08 MDL Number: MFCD00008765 InChI Key: CSCPPACGZOOCGX-UHFFFAOYSA-N Synonym: acetone, 2-propanone, propanone, dimethyl ketone, methyl ketone, dimethylformaldehyde, pyroacetic ether, beta-ketopropane, dimethylketal, chevron acetone PubChem CID: 180 ChEBI: CHEBI:15347 IUPAC Name: propan-2-one SMILES: CC(=O)C 100ML Acetone, 99.8%, Extra Dry, AcroSeal

Arecoline hydrobromide, 98+%, ACROS Organics™

CAS: 300-08-3 Molecular Formula: C8H14BrNO2 Molecular Weight (g/mol): 236.109 MDL Number: MFCD00039041 InChI Key: AXOJRQLKMVSHHZ-UHFFFAOYSA-N Synonym: arecoline hydrobromide, arecoline bromide, taeniolin, arecoline hbr, arecoline hydrobromide, methyl 1-methyl-1,2,5,6-tetrahydropyridine-3-carboxylate hydrobromide, arekolinhydrobromid german, unii-24s79b9cx7, methyl 1,2,5,6-tetrahydro-1-methylnicotinate hydrobromide, n-methyltetrahydronicotinic acid methyl ester hydrobromide PubChem CID: 9301 IUPAC Name: methyl 1-methyl-3,6-dihydro-2H-pyridine-5-carboxylate;hydrobromide SMILES: CN1CCC=C(C1)C(=O)OC.Br 25GR Arecoline hydrobromide, 98+%

Acetic Anhydride 99+%, ACROS Organics™

CAS: 108-24-7 Molecular Formula: C4H6O3 Molecular Weight (g/mol): 102.089 MDL Number: MFCD00008705 InChI Key: WFDIJRYMOXRFFG-UHFFFAOYSA-N Synonym: acetic anhydride, acetanhydride, acetic acid, anhydride, acetic oxide, acetyl oxide, ethanoic anhydride, acetyl ether, acetyl anhydride, acetic acid anhydride, anhydride acetique PubChem CID: 7918 ChEBI: CHEBI:36610 IUPAC Name: acetyl acetate SMILES: CC(=O)OC(=O)C 1LT Acetic anhydride, 99+%, pure

Glyoxalbis(2-hydroxyanil), 97%, ACROS Organics™

CAS: 1149-16-2 Molecular Formula: C14H12N2O2 Molecular Weight (g/mol): 240.262 MDL Number: MFCD00002183 InChI Key: OMJNMRJMNUREOJ-KOBPNRPCSA-N Synonym: glyoxal bis 2-hydroxyanil, glyoxalbis 2-hydroxyanil, glyoxal bis o-hydroxyanil, glyoxal bis 2-hydroxyaniline, glyoxylidenebis 2-hydroxyaniline, unii-e2aw5xx09u, gbha, 2,2'-ethanediylidenedinitrilo bisphenol, phenol, 2,2'-1,2-ethanediylidenedinitrilo bis, 2,2'-ethanediylidenedinitrilo diphenol PubChem CID: 5356911 IUPAC Name: 6-[(E)-2-(2-hydroxyanilino)ethenyl]iminocyclohexa-2,4-dien-1-one SMILES: C1=CC=C(C(=C1)NC=CN=C2C=CC=CC2=O)O 50GR Glyoxalbis(2-hydroxyanil), 97%

Methyl 3-aminobenzoate 98%, ACROS Organics™

CAS: 4526-07-2 Molecular Formula: C10H18Si2 Molecular Weight (g/mol): 194.42 MDL Number: MFCD00017102 InChI Key: LBNVCJHJRYJVPK-UHFFFAOYSA-N Synonym: 1,4-bis trimethylsilyl-1,3-butadiyne, 1,4-bis trimethylsilyl butadiyne, 1,4-bis trimethylsilyl buta-1,3-diyne, trimethyl 4-trimethylsilylbuta-1,3-diynyl silane, btmsbd, acmc-1ctvu, bis trimethylsiyl butadiyne, ksc491i6r, bis trimethylsilyl-1,3-butadiyne, bis trimethylsilyl butadiyne PubChem CID: 138279 IUPAC Name: trimethyl(4-trimethylsilylbuta-1,3-diynyl)silane SMILES: C[Si](C)(C)C#CC#C[Si](C)(C)C 5GR Methyl 3-aminobenzoate, 98%

Fullerene C60, 99.9%, ACROS Organics™

CAS: 99685-96-8 Molecular Formula: C60 Molecular Weight (g/mol): 720.66 MDL Number: MFCD00151408 InChI Key: XMWRBQBLMFGWIX-UHFFFAOYSA-N Synonym: fullerene, fullerene, buckminsterfullerene, buckyball, fullerene, fullerene 60, 60 fullerene, footballene, fullerene-c60, 5,6 fullerene-c60-ih PubChem CID: 123591 ChEBI: CHEBI:33128 IUPAC Name: (C\{60}-I\{h})[5,6]fullerene SMILES: C12=C3C4=C5C6=C1C7=C8C9=C1C%10=C%11C(=C29)C3=C2C3=C4C4=C5C5=C9C6=C7C6=C7C8=C1C1=C8C%10=C%10C%11=C2C2=C3C3=C4C4=C5C5=C%11C%12=C(C6=C95)C7=C1C1=C%12C5=C%11C4=C3C3=C5C(=C81)C%10=C23 250MG Fullerene C60, 99.9%

(Carbethoxymethylene)triphenylphosphorane, +98%, ACROS Organics™

CAS: 1099-45-2 Molecular Formula: C22H21O2P Molecular Weight (g/mol): 348.382 InChI Key: IIHPVYJPDKJYOU-UHFFFAOYSA-N Synonym: carbethoxymethylene triphenylphosphorane, ethyl triphenylphosphoranylidene acetate, triphenylcarbethoxymethylenephosphorane, acetic acid, triphenylphosphoranylidene-, ethyl ester, ethyl 2-triphenylphosphoranylidene acetate, ethoxycarbonylmethylene triphenylphosphorane, carboethoxymethylidenetriphenylphosphorane, ethyl triphenylphosphoranilidene acetate, carbethoxytriphenylphosphonium methylide, carbethoxymethylidenetriphenylphosphorane PubChem CID: 70670 IUPAC Name: ethyl 2-(triphenyl-$l^{5}-phosphanylidene)acetate SMILES: CCOC(=O)C=P(C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3 100GR (Carbethoxymethylene)triphenylphosphorane, 98+%

D(+)-Glucurono-3,6-lactone, 99+%, Acros Organics™

CAS: 32449-92-6 Molecular Formula: C6H8O6 Molecular Weight (g/mol): 176.124 MDL Number: MFCD00135622 InChI Key: UYUXSRADSPPKRZ-KKQCNMDGSA-N Synonym: d-glucuro-3,6-lactone PubChem CID: 91634076 IUPAC Name: (2S)-2-[(2S,3S,4R)-3,4-dihydroxy-5-oxooxolan-2-yl]-2-hydroxyacetaldehyde SMILES: C(=O)C(C1C(C(C(=O)O1)O)O)O 500GR D(+)-Glucurono-3,6-lactone, 99+%

Acetone, 99.6%, ACS reagent, ACROS Organics™

CAS: 67-64-1 Molecular Formula: C3H6O Molecular Weight (g/mol): 58.08 MDL Number: MFCD00008765 InChI Key: CSCPPACGZOOCGX-UHFFFAOYSA-N Synonym: acetone, 2-propanone, propanone, dimethyl ketone, methyl ketone, dimethylformaldehyde, pyroacetic ether, beta-ketopropane, dimethylketal, chevron acetone PubChem CID: 180 ChEBI: CHEBI:15347 IUPAC Name: propan-2-one SMILES: CC(=O)C 2.5LT Acetone, 99.6%, ACS reagent

1-Methyl-2-pyrrolidinone, ACS reagent, ACROS Organics™

CAS: 872-50-4 Molecular Formula: C5H9NO Molecular Weight (g/mol): 99.133 InChI Key: SECXISVLQFMRJM-UHFFFAOYSA-N Synonym: 1-methyl-2-pyrrolidinone, n-methyl-2-pyrrolidone, n-methylpyrrolidone, 1-methyl-2-pyrrolidone, methylpyrrolidone, m-pyrol, n-methyl-2-pyrrolidinone, n-methylpyrrolidinone, 1-methylpyrrolidinone, 2-pyrrolidinone, 1-methyl PubChem CID: 13387 ChEBI: CHEBI:7307 IUPAC Name: 1-methylpyrrolidin-2-one SMILES: CN1CCCC1=O 2.5LT 1-Methyl-2-pyrrolidinone, ACS reagent

Toluidine Blue O, pure, ACROS Organics™

CAS: 92-31-9 Molecular Formula: C15H16ClN3S Molecular Weight (g/mol): 305.824 MDL Number: MFCD00011934 InChI Key: GEDVVYWLPUPJJZ-UHFFFAOYSA-N Synonym: Basic blue 17, C.I. 52040, Tolonium chloride PubChem CID: 7083 IUPAC Name: (7-amino-8-methylphenothiazin-3-ylidene)-dimethylazanium;chloride SMILES: CC1=CC2=C(C=C1N)SC3=CC(=[N+](C)C)C=CC3=N2.[Cl-] 5GR Toluidine Blue O, pure

N,N-Dimethylformamide, 99.8%, Extra Dry over Molecular Sieve, AcroSeal™, ACROS Organics™

CAS: 68-12-2 Molecular Formula: C3H7NO Molecular Weight (g/mol): 73.095 MDL Number: MFCD00003284 InChI Key: ZMXDDKWLCZADIW-UHFFFAOYSA-N Synonym: dimethylformamide, dimethyl formamide, n,n-dimethylmethanamide, n-formyldimethylamine, formamide, n,n-dimethyl, dmf, dimethylformamid, dimetilformamide, dwumetyloformamid, dmfa PubChem CID: 6228 ChEBI: CHEBI:17741 IUPAC Name: N,N-dimethylformamide SMILES: CN(C)C=O 500ML N,N-Dimethylformamide, 99.8%, Extra Dry over Molecular Sieve, AcroSeal

3-Bromobenzoyl chloride, 97%, ACROS Organics™

CAS: 1711-09-7 Molecular Formula: C7H4BrClO Molecular Weight (g/mol): 219.462 MDL Number: MFCD00000669 InChI Key: PBOOZQFGWNZNQE-UHFFFAOYSA-N Synonym: m-bromobenzoyl chloride, benzoyl chloride, 3-bromo, 3-bromobenzoylchloride, benzoyl chloride, m-bromo, 3-bromobenzoic acid chloride, attercop-chm at106527, 3-brom-benzoylchlorid, 3-bromo-benzoylchlorid, 3-bromobenzoic chloride, pubchem13574 PubChem CID: 74377 IUPAC Name: 3-bromobenzoyl chloride SMILES: C1=CC(=CC(=C1)Br)C(=O)Cl 25GR 3-Bromobenzoyl chloride, 97%

Ethoxyacetic Acid 98%, ACROS Organics™

CAS: 627-03-2 Molecular Formula: C4H8O3 Molecular Weight (g/mol): 104.105 MDL Number: MFCD00004310 InChI Key: YZGQDNOIGFBYKF-UHFFFAOYSA-N Synonym: ethoxyacetic acid, acetic acid, ethoxy, ethoxy acetic acid, acetic acid, 2-ethoxy, ethoxy-acetic acid, unii-467vw095bx, o-ethylglycolic acid, ccris 7194, 2-ethoxy-acetic acid, dsstox_cid_11294 PubChem CID: 12301 IUPAC Name: 2-ethoxyacetic acid SMILES: CCOCC(=O)O 100GR Ethoxyacetic acid, 98%

Styrene, 99.5%, for analysis, stabilized, ACROS Organics™

CAS: 100-42-5 Molecular Formula: C8H8 Molecular Weight (g/mol): 104.152 MDL Number: MFCD00008612 InChI Key: PPBRXRYQALVLMV-UHFFFAOYSA-N Synonym: ethenylbenzene, phenylethylene, vinylbenzene, styrol, benzene, ethenyl, cinnamene, phenylethene, monomer, phenethylene, styrolene PubChem CID: 7501 ChEBI: CHEBI:27452 IUPAC Name: styrene SMILES: C=CC1=CC=CC=C1 250ML Styrene, 99.5%, for analysis, stabilized

Copper(II) acetate monohydrate, 98+%, extra pure, ACROS Organics™

CAS: 6046-93-1 Molecular Formula: C4H8CuO5 Molecular Weight (g/mol): 199.649 InChI Key: NWFNSTOSIVLCJA-UHFFFAOYSA-L Synonym: copper ii acetate monohydrate, cupric acetate monohydrate, copper diacetate monohydrate, copper acetate monohydrate, copper 2+ acetate, monohydrate, acetic acid, copper 2+ salt, monohydrate, verdigris, copper acetate hydrate, diacetoxycopper hydrate, copper acetate, hydrate PubChem CID: 165397 IUPAC Name: copper;diacetate;hydrate SMILES: CC(=O)[O-].CC(=O)[O-].O.[Cu+2] 2.5KG Copper(II) acetate monohydrate, 98+%, extrapure

Toluene, 99.8+%, for analysis, ACROS Organics™

CAS: 108-88-3 Molecular Formula: C7H8 Molecular Weight (g/mol): 92.141 MDL Number: MFCD00008512 InChI Key: YXFVVABEGXRONW-UHFFFAOYSA-N Synonym: methylbenzene, toluol, phenylmethane, benzene, methyl, methylbenzol, methacide, toluen, antisal 1a, tolu-sol, monomethyl benzene PubChem CID: 1140 ChEBI: CHEBI:17578 IUPAC Name: toluene SMILES: CC1=CC=CC=C1 1LT Toluene, 99.8+%, for analysis

3-Nitrostyrene, 97%, ACROS Organics™

CAS: 586-39-0 Molecular Formula: C8H7NO2 Molecular Weight (g/mol): 149.149 MDL Number: MFCD00007276 InChI Key: SYZVQXIUVGKCBJ-UHFFFAOYSA-N Synonym: 3-nitrostyrene, 1-nitro-3-vinylbenzene, m-nitrostyrene, benzene, 1-ethenyl-3-nitro, styrene, m-nitro, 1-nitro-3-vinyl-benzene, 3-nitrophenyl ethene, b-nitrostyrene, m-vinylnitrobenzene, 3-ethenylnitrobenzene PubChem CID: 68514 IUPAC Name: 1-ethenyl-3-nitrobenzene SMILES: C=CC1=CC(=CC=C1)[N+](=O)[O-] 10GR 3-Nitrostyrene, 97%, stabilized

Taurocholic acid, sodium salt hydrate, 98%, ACROS Organics™

CAS: 345909-26-4 Molecular Formula: C26H46NNaO8S Molecular Weight (g/mol): 555.703 InChI Key: RDAJAQDLEFHVNR-NEMAEHQESA-M Synonym: Sodium taurocholate hydrate PubChem CID: 23687511 IUPAC Name: sodium;2-[[(4R)-4-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3,7,12-trihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoyl]amino]ethanesulfonate;hydrate SMILES: CC(CCC(=O)NCCS(=O)(=O)[O-])C1CCC2C1(C(CC3C2C(CC4C3(CCC(C4)O)C)O)O)C.O.[Na+] 5GR Taurocholic acid, sodium salt hydrate, 98%

n-Butyl acetate, 99+%, extra pure, ACROS Organics™

CAS: 123-86-4 Molecular Formula: C6H12O2 Molecular Weight (g/mol): 116.16 MDL Number: MFCD00009445 InChI Key: DKPFZGUDAPQIHT-UHFFFAOYSA-N Synonym: n-butyl acetate, acetic acid, butyl ester, 1-butyl acetate, butyl ethanoate, acetic acid butyl ester, n-butyl ethanoate, n-butylacetate, butylacetat, acetic acid n-butyl ester, acetate de butyle PubChem CID: 31272 ChEBI: CHEBI:31328 IUPAC Name: butyl acetate SMILES: CCCCOC(=O)C 25LT n-Butyl acetate, 99+%, extra pure

N-Benzylbenzamide, 99%, ACROS Organics™

CAS: 1485-70-7 Molecular Formula: C14H13NO Molecular Weight (g/mol): 211.264 MDL Number: MFCD00003070 InChI Key: LKQUCICFTHBFAL-UHFFFAOYSA-N Synonym: benzamide, n-phenylmethyl, n-benzyl-benzamide, phenyl-n-benzylcarboxamide, benzoylbenzylamine, n~1~-benzylbenzamide, benzamide, n-benzyl, n-phenylmethyl benzamide, acmc-1bx9y, n-benzylbenzamide, lkqucicfthbfal-uhfffaoysa PubChem CID: 73878 IUPAC Name: N-benzylbenzamide SMILES: C1=CC=C(C=C1)CNC(=O)C2=CC=CC=C2 5GR N-Benzylbenzamide, 99%

Glycylglycine, 99+%, ACROS Organics™

CAS: 556-50-3 Molecular Formula: C4H8N2O3 Molecular Weight (g/mol): 132.119 MDL Number: MFCD00008130 InChI Key: YMAWOPBAYDPSLA-UHFFFAOYSA-N Synonym: glycylglycine, n-glycylglycine, diglycine, gly-gly, glycine dipeptide, glycine, glycyl, glycyl-glycine, glycine, n-glycyl, gly2, 2-2-aminoacetamido acetic acid PubChem CID: 11163 ChEBI: CHEBI:17201 IUPAC Name: 2-[(2-aminoacetyl)amino]acetic acid SMILES: C(C(=O)NCC(=O)O)N 25GR Glycylglycine, 99+%

Ethylmercurithiosalicylic acid, sodium salt, 97.0-101.0%, ACROS Organics™

CAS: 54-64-8 Molecular Formula: C9H9HgNaO2S Molecular Weight (g/mol): 404.811 MDL Number: MFCD00013062 InChI Key: RTKIYNMVFMVABJ-UHFFFAOYSA-L Synonym: thimerosal, thiomersal, thiomersalate, mercurothiolate, sodium merthiolate, sodium ethylmercurithiosalicylate, merthiolate, thimerosalate, thimerosalum, thimersalate PubChem CID: 16684434 ChEBI: CHEBI:9546 IUPAC Name: sodium;(2-carboxylatophenyl)sulfanyl-ethylmercury SMILES: CC[Hg]SC1=CC=CC=C1C(=O)[O-].[Na+] 25GR Ethylmercurithiosalicylic acid, sodium salt, %, 97.0-101.0%

Copper(II) acetylacetonate, 98%, ACROS Organics™

CAS: 13395-16-9 Molecular Formula: C10H14CuO4 MDL Number: MFCD00000016 Synonym: 2, 4-Pentanedione, metal derivative, Cupric acetylacetonate 500GR Copper(II) acetylacetonate, 98%

Dimethyl carbonate, 99%, Acros Organics™

CAS: 616-38-6 Molecular Formula: C3H6O3 Molecular Weight (g/mol): 90.078 MDL Number: MFCD00008420 InChI Key: IEJIGPNLZYLLBP-UHFFFAOYSA-N Synonym: methyl carbonate, carbonic acid, dimethyl ester, carbonic acid dimethyl ester, methyl carbonate meo 2co, unii-ke9j097spn, dimethylcarbonate, ch3ocooch3, ke9j097spn, dimethyl ester of carbonic acid, dsstox_cid_9192 PubChem CID: 12021 ChEBI: CHEBI:36596 IUPAC Name: dimethyl carbonate SMILES: COC(=O)OC 1KG Dimethyl carbonate, 99%

4-Trimethylsilyl-3-butyn-1-ol, 98%, ACROS Organics™

CAS: 2117-12-6 Molecular Formula: C7H14OSi Molecular Weight (g/mol): 142.27 MDL Number: MFCD00190217 InChI Key: VSTMVAFCUIGHQI-UHFFFAOYSA-N Synonym: 4-trimethylsilyl-3-butyn-1-ol, 4-trimethylsilyl but-3-yn-1-ol, 3-butyn-1-ol, 4-trimethylsilyl, 4-trimethylsilyl-3-butyne-1-ol, 1-trimethylsilyl-1-butyn-4-ol, 4-trimethylsilyl-3-butyn-1-ol, 3-butyn-1-ol,4-trimethylsilyl PubChem CID: 2760827 IUPAC Name: 4-trimethylsilylbut-3-yn-1-ol SMILES: C[Si](C)(C)C#CCCO 25GR 4-Trimethylsilyl-3-butyn-1-ol, 98%

Alfa Aesar™ Crotonyl chloride, 90+%, remainder mainly cis-isomer

CAS: 625-35-4 Molecular Formula: C4H5ClO Molecular Weight (g/mol): 104.533 MDL Number: MFCD00000734 InChI Key: RJUIDDKTATZJFE-NSCUHMNNSA-N Synonym: crotonyl chloride, 2-butenoyl chloride, crotonoyl chloride, e-but-2-enoyl chloride, e-2-butenoyl chloride, crotonic acid chloride, 2e-but-2-enoyl chloride, 2-butenoyl chloride, e, 2-butenoyl chloride, 2e, trans-2-butenoyl chloride PubChem CID: 643131 IUPAC Name: (E)-but-2-enoyl chloride SMILES: CC=CC(=O)Cl CROTONYL CHLORIDE, TECH., 90%,500G

DL-2,3-Diaminopropionic acid monohydrochloride, 99%, ACROS Organics™

CAS: 54897-59-5 Molecular Formula: C3H9ClN2O2 Molecular Weight (g/mol): 140.567 MDL Number: MFCD00012884 InChI Key: SKWCZPYWFRTSDD-UHFFFAOYSA-N Synonym: 2,3-diaminopropanoic acid hydrochloride, dl-2,3-diaminopropionic acid hydrochloride, 3-amino-dl-alanine hydrochloride, dl-2,3-diaminopropionic acid monohydrochloride, 2,3-diaminopropionic acid hydrochloride, +--2,3-diaminopropionic acid hydrochloride, 3-amino-dl-alanine monohydrochloride, 2,3-diaminopropionic acid monohydrochloride, dl-2,3-diaminopropanoic acid hydrochloride, diaminopropionic acid PubChem CID: 108638 IUPAC Name: 2,3-diaminopropanoic acid;hydrochloride SMILES: C(C(C(=O)O)N)N.Cl 25GR DL-2,3-Diaminopropionic acid monohydrochloride, 99%

Citric acid, trisodium salt 98%, anhydrous, pure, ACROS Organics™

CAS: 68-04-2 Molecular Formula: C6H5Na3O7 Molecular Weight (g/mol): 258.068 MDL Number: MFCD00012462 InChI Key: HRXKRNGNAMMEHJ-UHFFFAOYSA-K Synonym: sodium citrate, trisodium citrate, citrosodine, sodium citrate anhydrous, citrosodina, natrocitral, citnatin, citreme, citrosodna, trisodium citrate, anhydrous PubChem CID: 6224 ChEBI: CHEBI:53258 IUPAC Name: trisodium;2-hydroxypropane-1,2,3-tricarboxylate SMILES: C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.[Na+].[Na+].[Na+] 100GR Citric acid, trisodium salt, 98%, pure, anhydrous

3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic Acid, Indicator Grade, Pure, ACROS Organics™

CAS: 3737-95-9 Molecular Formula: C21H14N2O7S Molecular Weight (g/mol): 438.41 MDL Number: MFCD00004078 InChI Key: ULIVOAKVRBXKKS-PYCFMQQDSA-N Synonym: calconcarboxylic acid, patton-reeder indicator, calconcarbonic acid, calcon 3-carboxylic acid, patton and reeder's indicator, 2-hydroxy-1-2-hydroxy-4-sulfo-1-napthylazo-3-naphthoic acid, 2,2'-dihydroxy-4'-sulpho-1,1'-azonaphthalene-3-carboxylic acid, 2-naphthalenecarboxylic acid, 3-hydroxy-4-2-hydroxy-4-sulfo-1-naphthalenyl azo, 2-naphthalenecarboxylic acid, 3-hydroxy-4-2-hydroxy-4-sulfo-1-naphthalenyl azo, nn PubChem CID: 5895210 IUPAC Name: 3-hydroxy-4-[(2Z)-2-(2-oxo-4-sulfonaphthalen-1-ylidene)hydrazinyl]naphthalene-2-carboxylic acid SMILES: C1=CC=C2C(=C1)C=C(C(=C2NN=C3C4=CC=CC=C4C(=CC3=O)S(=O)(=O)O)O)C(=O)O 50GR 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid, indicator grade

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