Vinylogous acids

Dibenzo[B,E]Thiepin-11(6H)-one, British Pharmacopoeia (BP) Reference Standard, MilliporeSigma™ Supelco™

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets, has been developed and issued under the Authority of the issuing Pharmacopoeia.

Dorzolamide Impurity B, British Pharmacopoeia (BP) Reference Standard, MilliporeSigma™ Supelco™

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets, has been developed and issued under the Authority of the issuing Pharmacopoeia.

Allopurinol Impurity D, British Pharmacopoeia (BP) Reference Standard, MilliporeSigma™ Supelco™

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets, has been developed and issued under the Authority of the issuing Pharmacopoeia.

4-Aminoantipyrine, ≥98.0%, MilliporeSigma™ Supelco™

MDL Number: MFCD00003145 Synonym: 4-Amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one; Ampyrone

4-Aminoantipyrine, BAKER™, J.T. Baker™

Ethyl 3-trifluoromethyl-1H-pyrazole-4-carboxylate, 97%

CAS: 155377-19-8 Molecular Formula: C7H7F3N2O2 Molecular Weight (g/mol): 208.14 MDL Number: MFCD00052083 InChI Key: VYXIHSAEOXPAEY-UHFFFAOYSA-N Synonym: ethyl 3-trifluoromethyl pyrazole-4-carboxylate,ethyl 3-trifluoromethyl-1h-pyrazole-4-carboxylate,ethyl 5-trifluoromethyl-1h-pyrazole-4-carboxylate,3-trifluoromethyl-1h-pyrazole-4-carboxylic acid ethyl ester,3-trifluoromethyl pyrazole-4-carboxylic acid ethyl ester,ethyl 3-trifluoromethyl-2h-pyrazole-4-carboxylate,5-trifluoromethyl-1h-pyrazole-4-carboxylic acid ethyl ester,1h-pyrazole-4-carboxylic acid, 3-trifluoromethyl-, ethyl ester PubChem CID: 596095 IUPAC Name: ethyl 5-(trifluoromethyl)-1H-pyrazole-4-carboxylate SMILES: CCOC(=O)C1=C(NN=C1)C(F)(F)F

Isatoic anhydride, 97%

CAS: 118-48-9 Molecular Formula: C8H5NO3 Molecular Weight (g/mol): 163.13 MDL Number: MFCD00006700 InChI Key: TXJUTRJFNRYTHH-UHFFFAOYSA-N Synonym: isatoic anhydride,2h-3,1-benzoxazine-2,4 1h-dione,1h-benzo d 1,3 oxazine-2,4-dione,isatoic acid anhydride,4h-3,1-benzoxazine-2,4 1h-dione,isato acid anhydride,n-carboxyanthranilic anhydride,unii-r8tfa74y4u,3,1-benzoxazine-2,4 1h-dione,anthranilic acid, n-carboxy-, cyclic anhydride PubChem CID: 8359 SMILES: O=C1NC2=CC=CC=C2C(=O)O1

3,4-Dihydroxy-3-cyclobutene-1,2-dione, 98+%

CAS: 2892-51-5 Molecular Formula: C4H2O4 Molecular Weight (g/mol): 114.056 MDL Number: MFCD00001334 InChI Key: PWEBUXCTKOWPCW-UHFFFAOYSA-N Synonym: squaric acid,3,4-dihydroxy-3-cyclobutene-1,2-dione,quadratic acid,3-cyclobutene-1,2-dione, 3,4-dihydroxy,quadratsaeure,cyclobutenedione, dihydroxy,1,2-diketo-3,4-dihydroxycyclobutene,dihydroxycyclobutenedione,unii-svr9d0vodw,dihydroxycyclobut-3-ene-1,2-dione PubChem CID: 17913 ChEBI: CHEBI:52141 IUPAC Name: 3,4-dihydroxycyclobut-3-ene-1,2-dione SMILES: C1(=C(C(=O)C1=O)O)O

Ethyl 3-amino-1H-pyrazole-4-carboxylate, 99%

CAS: 6994-25-8 Molecular Formula: C6H9N3O2 Molecular Weight (g/mol): 155.157 MDL Number: MFCD00005238 InChI Key: YPXGHKWOJXQLQU-UHFFFAOYSA-N Synonym: ethyl 3-amino-1h-pyrazole-4-carboxylate,ethyl 3-amino-4-pyrazolecarboxylate,3-amino-4-carbethoxypyrazole,5-amino-1h-pyrazole-4-carboxylic acid ethyl ester,3-amino-1h-pyrazole-4-carboxylic acid ethyl ester,ethyl 3-aminopyrazole-4-carboxylate,3-amino-4-ethoxycarbonylpyrazole,unii-9gy5ha1gaa,3-amino-4-carbethoxypyrazol,1h-pyrazole-4-carboxylic acid, 3-amino-, ethyl ester PubChem CID: 81472 IUPAC Name: ethyl 5-amino-1H-pyrazole-4-carboxylate SMILES: CCOC(=O)C1=C(NN=C1)N

Hypoxanthine, 99%

CAS: 68-94-0 Molecular Formula: C5H4N4O Molecular Weight (g/mol): 136.11 MDL Number: MFCD00005725 InChI Key: FDGQSTZJBFJUBT-UHFFFAOYSA-N Synonym: hypoxanthine,6-hydroxypurine,9h-purin-6-ol,sarkin,6-oxopurine,sarcine,sarkine,3h-purin-6-ol,7h-purin-6-ol,purin-6 1h-one PubChem CID: 790 ChEBI: CHEBI:17368 IUPAC Name: 3,7-dihydropurin-6-one SMILES: O=C1N=CNC2=C1NC=N2

Antipyrine, 98%

CAS: 60-80-0 Molecular Formula: C11H12N2O Molecular Weight (g/mol): 188.23 MDL Number: MFCD00003146 InChI Key: VEQOALNAAJBPNY-UHFFFAOYSA-N Synonym: antipyrine,phenazone,antipyrin,phenazon,analgesine,anodynine,anodynin,azophen,fenazone,2,3-dimethyl-1-phenyl-5-pyrazolone PubChem CID: 2206 ChEBI: CHEBI:31225 IUPAC Name: 1,5-dimethyl-2-phenylpyrazol-3-one SMILES: CC1=CC(=O)N(N1C)C2=CC=CC=C2

2,2,6-Trimethyl-1,3-dioxin-4-one, cont. up to ca 6% acetone

CAS: 5394-63-8 Molecular Formula: C7H10O3 Molecular Weight (g/mol): 142.154 MDL Number: MFCD00040468 InChI Key: XFRBXZCBOYNMJP-UHFFFAOYSA-N Synonym: 2,2,6-trimethyl-4h-1,3-dioxin-4-one,2,2,4-trimethyl-6-keto-1,3-dioxin,diketene acetone adduct,4h-1,3-dioxin-4-one, 2,2,6-trimethyl,2,2,6-trimethyl-1,3-dioxen-4-one,2,2,6-trimethyl-1,3-dioxine-4-one,2,2,6-trimethyl-1,3 dioxin-4-one,pubchem20364,2,2,6-trimethyl-4h-1,3-dioxin-4-on,acmc-1akcb PubChem CID: 79368 IUPAC Name: 2,2,6-trimethyl-1,3-dioxin-4-one SMILES: CC1=CC(=O)OC(O1)(C)C

Ethyl 2-amino-4-methylthiophene-3-carboxylate, 98+%

CAS: 43088-42-2 Molecular Formula: C8H11NO2S Molecular Weight (g/mol): 185.241 MDL Number: MFCD00051669 InChI Key: ILYCZKOBLRJJSW-UHFFFAOYSA-N Synonym: 2-amino-4-methylthiophene-3-carboxylic acid ethyl ester,2-amino-4-methyl-thiophene-3-carboxylic acid ethyl ester,3-thiophenecarboxylic acid, 2-amino-4-methyl-, ethyl ester,ethyl2-amino-4-methylthiophene-3-carboxylate,ethyl 2-amino-4-methyl-3-thiophenecarboxylate,acmc-20a9ux,maybridge1_003755,2-amino-4-methyl-3-ethoxycarbonyl-thiophene,ethyl 2-amino4-methylthiophene-3-carboxylate,2-amino-3-ethoxycarbonyl-4-methylthiophene PubChem CID: 521132 IUPAC Name: ethyl 2-amino-4-methylthiophene-3-carboxylate SMILES: CCOC(=O)C1=C(SC=C1C)N

4-Ethoxymethylene-2-phenyloxazolin-5-one, 98+%

CAS: 15646-46-5 Molecular Formula: C12H11NO3 Molecular Weight (g/mol): 217.224 MDL Number: MFCD00003204 InChI Key: SJHPCNCNNSSLPL-NTMALXAHSA-N Synonym: oxazolone,oxazolone sensitizing agent,5 4h-oxazolone, 4-ethoxymethylene-2-phenyl,unii-78il0j7n72,4-ethoxymethylene-2-phenyl-2-oxazolin-5-one,4-ethoxymethylene-2-phenyloxazolin-5-one,4-ethoxymethylene-2-phenyl-2-oxazoline-5-one,4z-4-ethoxymethylidene-2-phenyl-1,3-oxazol-5-one,2-oxazolin-5-one, 4-ethoxymethylene-2-phenyl,4-ethoxymethylene-2-phenyloxazolone PubChem CID: 1712094 IUPAC Name: (4Z)-4-(ethoxymethylidene)-2-phenyl-1,3-oxazol-5-one SMILES: CCOC=C1C(=O)OC(=N1)C2=CC=CC=C2

4-Aminoantipyrine, 97%

CAS: 83-07-8 Molecular Formula: C11H13N3O Molecular Weight (g/mol): 203.245 MDL Number: MFCD00003145 InChI Key: RLFWWDJHLFCNIJ-UHFFFAOYSA-N Synonym: 4-aminoantipyrine,ampyrone,metapirazone,aminoantipyrine,solvapyrin-a,aminoazophene,4-aminophenazone,4-aminoantipyrene,aminoantipyrin,solnapyrin-a PubChem CID: 2151 ChEBI: CHEBI:59026 IUPAC Name: 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one SMILES: CC1=C(C(=O)N(N1C)C2=CC=CC=C2)N