Heterocyclic Building Blocks

4,6-Dihydroxy-2-mercaptopyrimidine, 98%, ACROS Organics™

CAS: 504-17-6 Molecular Formula: C4H4N2O2S Molecular Weight (g/mol): 144.148 MDL Number: MFCD00006674 InChI Key: RVBUGGBMJDPOST-UHFFFAOYSA-N Synonym: 2-thiobarbituric acid, thiobarbituric acid, bathyran, austranal, 4,6-dihydroxy-2-thiopyrimidine, 2-thioxodihydropyrimidine-4,6 1h,5h-dione, 2-thio-4,6-dioxypyrimidine, usaf ek-660, 4,6 1h,5h-pyrimidinedione, dihydro-2-thioxo, 2-mercaptobarbituric acid PubChem CID: 2723628 ChEBI: CHEBI:33202 IUPAC Name: 2-sulfanylidene-1,3-diazinane-4,6-dione SMILES: C1C(=O)NC(=S)NC1=O 5GR 4,6-Dihydroxy-2-mercaptopyrimidine, 98%

L(-)-Tryptophan 99%, ACROS Organics™

CAS: 73-22-3 Molecular Formula: C11H12N2O2 Molecular Weight (g/mol): 204.229 MDL Number: MFCD00064340 InChI Key: QIVBCDIJIAJPQS-VIFPVBQESA-N Synonym: l-tryptophan, tryptophan, l-tryptophane, s-tryptophan, tryptophane, h-trp-oh, optimax, trofan, tryptacin, ardeytropin PubChem CID: 6305 ChEBI: CHEBI:16828 IUPAC Name: (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid SMILES: C1=CC=C2C(=C1)C(=CN2)CC(C(=O)O)N 1KG L(-)-Tryptophan, 99%

Alfa Aesar™ Disuccinimidyl glutarate, 97%

CAS: 79642-50-5 Molecular Formula: C13H14N2O8 Molecular Weight (g/mol): 326.261 MDL Number: MFCD00153597 InChI Key: LNQHREYHFRFJAU-UHFFFAOYSA-N Synonym: disuccinimidyl glutarate, di n-succinimidyl glutarate, bis 2,5-dioxopyrrolidin-1-yl pentanedioate, pentanedioic acid,1,5-bis 2,5-dioxo-1-pyrrolidinyl ester, dsg crosslinker, glutaric acid disuccinimidyl ester, di n-hydroxysuccinimidyl glutarate, bis 2,5-dioxopyrrolidin-1-yl glutarate, di n-succinimidyl glutarate chn PubChem CID: 4432628 IUPAC Name: bis(2,5-dioxopyrrolidin-1-yl) pentanedioate SMILES: C1CC(=O)N(C1=O)OC(=O)CCCC(=O)ON2C(=O)CCC2=O 500MG Disuccinimidyl glutarate, 97% 500mg

Sesamol, 98%, ACROS Organics™

CAS: 533-31-3 Molecular Formula: C7H6O3 Molecular Weight (g/mol): 138.122 MDL Number: MFCD00005827 InChI Key: LUSZGTFNYDARNI-UHFFFAOYSA-N Synonym: sesamol, 3,4-methylenedioxy phenol, 5-hydroxy-1,3-benzodioxole, 3,4-methylenedioxyphenol, 2h-1,3-benzodioxol-5-ol, 3,4-methylendioxyphenol, methylene ether of oxyhydroquinone, phenol, 3,4-methylenedioxy, 5-benzodioxolol, unii-94iea0nv89 PubChem CID: 68289 ChEBI: CHEBI:9126 IUPAC Name: 1,3-benzodioxol-5-ol SMILES: C1OC2=C(O1)C=C(C=C2)O 100GR Sesamol, 98%

5-(4-Pyridyl)-1H-1,2,4-triazole-3-thiol, 98%, ACROS Organics™

1GR 5-(4-Pyridyl)-1H-1,2,4-triazole-3-thiol, 98%

10-Hydroxybenzo[h]quinoline, 98%, Alfa Aesar™

CAS: 33155-90-7 Molecular Formula: C13H9NO Molecular Weight (g/mol): 195.221 MDL Number: MFCD00142350 InChI Key: ZVFJWYZMQAEBMO-UHFFFAOYSA-N Synonym: 10-hydroxybenzo h quinoline, benzo h quinolin-10-ol, benzo h quinolin-10-ol, 10-hydroxy-benzo h quinoline, benzo h quinolin-10 1h-one, 4-hydroxy-5-azaphenanthrene, acmc-1cr1k, 10-hydroxybenzo h quinoline, benzo h quinoline-10 1h-one, kesrrrlhhxxbrw-uhfffaoysa-n PubChem CID: 11816407 IUPAC Name: 1H-benzo[h]quinolin-10-one SMILES: C1=CC(=O)C2=C3C(=CC=CN3)C=CC2=C1 10-HYDROXYBENZO(H)QUINOLINE,25G

8-Methoxypsoralen, 99%, ACROS Organics™

CAS: 298-81-7 Molecular Formula: C12H8O4 Molecular Weight (g/mol): 216.192 MDL Number: MFCD00005009 InChI Key: QXKHYNVANLEOEG-UHFFFAOYSA-N Synonym: methoxsalen, 8-methoxypsoralen, xanthotoxin, meladinine, ammoidin, oxsoralen, meloxine, oxypsoralen, xanthotoxine, meladinin PubChem CID: 4114 ChEBI: CHEBI:18358 IUPAC Name: 9-methoxyfuro[3,2-g]chromen-7-one SMILES: COC1=C2C(=CC3=C1OC=C3)C=CC(=O)O2 1GR 8-Methoxypsoralen, 99%

Quinoxaline, 99%, ACROS Organics™

CAS: 91-19-0 Molecular Formula: C8H6N2 Molecular Weight (g/mol): 130.15 MDL Number: MFCD00006719 InChI Key: XSCHRSMBECNVNS-UHFFFAOYSA-N Synonym: benzoparadiazine, 1,4-benzodiazine, phenopiazine, phenpiazine, quinazine, benzopyrazine, 1,4-diazanaphthalene, benzo a pyrazine, 1,4-naphthyridine, chinoxalin PubChem CID: 7045 ChEBI: CHEBI:36616 IUPAC Name: quinoxaline SMILES: C1=CC=C2C(=C1)N=CC=N2 500GR Quinoxaline, 98+%

1,4-Diazabicyclo[3.2.2]nonane, 95%, ACROS Organics™

CAS: 283-38-5 Molecular Formula: C7H14N2 Molecular Weight (g/mol): 126.203 InChI Key: XJKNACDCUAFDHD-UHFFFAOYSA-N Synonym: 1,4-diazabicyclo 3.2.2 nonane, 1,4-diazobicylco 3.2.2 nonane, 1,4-diaza-bicyclo 3.2.2 nonane, 1,4-diazabicyclo-3.2.2 nonane, 1,4-diazabicyclo 3.2.2 nonane, 1,4-diazabicyclo 3.2.2 _nonane, 1,4-diazabicyclo 3.2.2-nonane PubChem CID: 398407 IUPAC Name: 1,4-diazabicyclo[3.2.2]nonane SMILES: C1CN2CCC1NCC2 5GR 1,4-Diazabicyclo¬Ę3.2.2!nonane, 95%

1,10-Phenanthroline Monohydrochloride Monohydrate, 97%, ACROS Organics™

CAS: 18851-33-7 Molecular Formula: C12H11ClN2O Molecular Weight (g/mol): 234.683 MDL Number: MFCD00150061 InChI Key: NDLHUHRGAIHALB-UHFFFAOYSA-N Synonym: 1,10-phenanthroline hydrochloride monohydrate, 1,10-phenanthroline hydrochloride hydrate, 1,10-phenanthroline monohydrochloride monohydrate, 1,10-phenanthroline hydrate hydrochloride, 1,10-phenanthroline, monohydrochloride, monohydrate, phen hydrate hydrochloride, acmc-209iz9, dsstox_cid_24309, dsstox_rid_80145, dsstox_gsid_44309 PubChem CID: 2723715 IUPAC Name: 1,10-phenanthroline;hydrate;hydrochloride SMILES: C1=CC2=C(C3=C(C=CC=N3)C=C2)N=C1.O.Cl 25GR 1,10-Phenanthroline monohydrochloride monohydrate, 97%

Alfa Aesar™ 1-(4-Hydroxyphenyl)-5-mercaptotetrazole, 96%

CAS: 52431-78-4 Molecular Formula: C7H6N4OS Molecular Weight (g/mol): 194.212 MDL Number: MFCD00132898 InChI Key: MOXZSKYLLSPATM-UHFFFAOYSA-N Synonym: 1-4-hydroxyphenyl-5-mercaptotetrazole, 1-4-hydroxyphenyl-1h-tetrazole-5-thiol, 1-4-hydroxyphenyl-2h-tetrazole-5-thione, 1-4-hydroxyphenyl-5-mercapto-1h-tetrazole, 5h-tetrazole-5-thione, 1,2-dihydro-1-4-hydroxyphenyl, 1-4-hydroxyphenyl-1h-tetrazole-5 4h-thione, 4-5-sulfanyl-1h-1,2,3,4-tetrazol-1-yl phenol, 1,2-dihydro-1-p-hydroxyphenyl-5h-tetrazole-5-thione, 4-5-mercapto-1h-tetrazol-1-yl phenol, 4-5-sulfanyl-1h-tetrazol-1-yl phenol PubChem CID: 3034725 IUPAC Name: 1-(4-hydroxyphenyl)-2H-tetrazole-5-thione SMILES: C1=CC(=CC=C1N2C(=S)N=NN2)O 1-(4-HYDROXYPHENYL)-5-MERCAPTOTETRAZOLE, 96%,25G

Alfa Aesar™ 5-Chloro-2-mercaptobenzothiazole, 98%

CAS: 5331-91-9 Molecular Formula: C7H4ClNS2 Molecular Weight (g/mol): 201.686 MDL Number: MFCD00005783 InChI Key: NKYDKCVZNMNZCM-UHFFFAOYSA-N Synonym: 5-chloro-2-mercaptobenzothiazole, 5-chloro-1,3-benzothiazole-2-thiol, 5-chlorobenzo d thiazole-2 3h-thione, sh-benzothiazole, 5-chloro-2-benzothiazolethiol, 2 3h-benzothiazolethione, 5-chloro, 5-chlorobenzo d thiazole-2-thiol, 5-chlorobenzothiazole-2-thiol, benzothiazole, 5-chloro-2-mercapto, 2-benzothiazolethiol, 5-chloro PubChem CID: 2723842 IUPAC Name: 5-chloro-3H-1,3-benzothiazole-2-thione SMILES: C1=CC2=C(C=C1Cl)NC(=S)S2 5-CHLORO-2-MERCAPTOBENZOTHIAZOLE, 98%,25G

Alfa Aesar™ 1-Phenyl-1H-tetrazole-5-thiol, 99%

CAS: 86-93-1 Molecular Formula: C7H6N4S Molecular Weight (g/mol): 178.213 MDL Number: MFCD00003129 InChI Key: GGZHVNZHFYCSEV-UHFFFAOYSA-N Synonym: 1-phenyl-1h-tetrazole-5-thiol, 1-phenyltetrazole-5-thiol, 1-phenyl-5-mercaptotetrazole, 5-mercapto-1-phenyltetrazole, 1-phenyltetrazoline-5-thione, mercaptophenyltetrazole, phenylmercaptotetrazole, 1-phenyl-5-tetrazolethione, 5-mercapto-1-phenyltetrazol, 1-phenyltetrazole-thiol PubChem CID: 690730 ChEBI: CHEBI:79916 IUPAC Name: 1-phenyl-2H-tetrazole-5-thione SMILES: C1=CC=C(C=C1)N2C(=S)N=NN2 1-PHENYL-1H-TETRAZOLE-5-THIOL, 99%,100G

Alfa Aesar™ Thymolphthalein

CAS: 125-20-2 Molecular Formula: C28H30O4 Molecular Weight (g/mol): 430.544 MDL Number: MFCD00005909 InChI Key: LDKDGDIWEUUXSH-UHFFFAOYSA-N Synonym: thymolphthalein, thymophthalein, unii-yg5i28wsqp, yg5i28wsqp, phenolphthalein, 5',5-diisopropyl-2',2-dimethyl, 3,3-bis 4-hydroxy-5-isopropyl-2-methylphenyl-2-benzofuran-1 3h-one, 1 3h-isobenzofuranone, 3,3-bis 4-hydroxy-2-methyl-5-1-methylethyl phenyl, 1 3h-isobenzofuranone, 3,3-bis 4-hydroxy-2-methyl-5-1-methylethyl phenyl, 5',5-diisopropyl-2',2-dimethylphenolphthalein, 3,3-bis 4-hydroxy-2-methyl-5-propan-2-ylphenyl-2-benzofuran-1-one PubChem CID: 31316 IUPAC Name: 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one SMILES: CC1=CC(=C(C=C1C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C=C4C)O)C(C)C)C(C)C)O THYMOLPHTHALEIN 250G

Alfa Aesar™ 7-Hydroxycoumarin, 98%

CAS: 93-35-6 Molecular Formula: C9H6O3 Molecular Weight (g/mol): 162.144 MDL Number: MFCD00006878 InChI Key: ORHBXUUXSCNDEV-UHFFFAOYSA-N Synonym: 7-hydroxycoumarin, umbelliferone, 7-hydroxy-2h-chromen-2-one, hydrangin, skimmetin, 7-hydroxycoumarine, 7-oxycoumarin, hydrangine, skimmetine, umbelliferon PubChem CID: 5281426 ChEBI: CHEBI:27510 IUPAC Name: 7-hydroxychromen-2-one SMILES: C1=CC(=CC2=C1C=CC(=O)O2)O 7-HYDROXYCOUMARIN, 99% 25G

3-Methylfuran, 98%, ACROS Organics™

1GR 3-Methylfuran, 98%

Alfa Aesar™ 6-Bromo-2,4-dichloroquinazoline, 97%

CAS: 102393-82-8 Molecular Formula: C8H3BrCl2N2 Molecular Weight (g/mol): 277.93 MDL Number: MFCD09744007 InChI Key: LBAYOWRVZAKPLS-UHFFFAOYSA-N Synonym: quinazoline, 6-bromo-2,4-dichloro, 2,4-dichloro-6-bromoquinazoline, 6-bromo-2,4-dichloro-quinazoline, quinazoline,6-bromo-2,4-dichloro, pubchem14690, acmc-1c6nj, abbypharma ap-16-10560, 6-bromanyl-2,4-bis chloranyl quinazoline PubChem CID: 10107568 IUPAC Name: 6-bromo-2,4-dichloroquinazoline SMILES: C1=CC2=C(C=C1Br)C(=NC(=N2)Cl)Cl 1GR 6-Bromo-2,4-dichloroquinazoline, 97% 1g

N-Methylmorpholine, 99.5%, purified by distillation, AcroSeal™, ACROS Organics™

CAS: 109-02-4 Molecular Formula: C5H11NO Molecular Weight (g/mol): 101.149 InChI Key: SJRJJKPEHAURKC-UHFFFAOYSA-N Synonym: n-methylmorpholine, morpholine, 4-methyl, methylmorpholine, 1-methylmorpholine, morpholine, n-methyl, 4-methylmorfolin, 4-methylmorpholin, n-methyl morpholine, 4-methylmorfolin czech, n-methylmorpholin PubChem CID: 7972 IUPAC Name: 4-methylmorpholine SMILES: CN1CCOCC1 1LT N-Methylmorpholine, 99.5%, purified by redistillation, AcroSeal

Alfa Aesar™ Pyrazine-2-carbonitrile, 97+%

CAS: 19847-12-2 Molecular Formula: C5H3N3 Molecular Weight (g/mol): 105.1 MDL Number: MFCD00049361 InChI Key: PMSVVUSIPKHUMT-UHFFFAOYSA-N Synonym: pyrazinecarbonitrile, 2-cyanopyrazine, cyanopyrazine, 2-pyrazinecarbonitrile, pyrazinenitrile, pyrazinonitrile, 2-cyanopyarine, pyrazinecarbonitrile, 2-cyano pyrazine, 2-cyanopyrazine PubChem CID: 73172 ChEBI: CHEBI:3982 IUPAC Name: pyrazine-2-carbonitrile SMILES: C1=CN=C(C=N1)C#N PYRAZINE-2-CARBONITRILE, 98%,5G

4-Amino-1,2,2,6,6-pentamethylpiperidine, 99%, ACROS Organics™

CAS: 40327-96-6 Molecular Formula: C10H22N2 Molecular Weight (g/mol): 170.3 MDL Number: MFCD01861832 InChI Key: CGXOAAMIQPDTPE-UHFFFAOYSA-N Synonym: 4-amino-1,2,2,6,6-pentamethylpiperidine, 1,2,2,6,6-pentamethyl-4-aminopiperidine, 1,2,2,6,6-pentamethyl-4-piperidinamine, 1,2,2,6,6-pentamethyl-4-piperidylamine, 4-ammo-1,2,2,6,6-pentamethylpiperidine, 4-piperidinamine,1,2,2,6,6-pentamethyl, 1,2,-2,6,6-pentamethyl-4-aminopiperidine, 1,2,2,6,6,-pentamethyl-4-aminopiperidine, 4-amino-1,2,2,6,6-pentamethyl-piperidine, 4-amino-1,2,2,6,6-pentamethyl piperidine, 97+% PubChem CID: 693792 IUPAC Name: 1,2,2,6,6-pentamethylpiperidin-4-amine SMILES: CC1(CC(CC(N1C)(C)C)N)C 1GR 4-Amino-1,2,2,6,6-pentamethylpiperidine, 99%

Alfa Aesar™ 2-Fluoro-5-nitropyridine, 98%

CAS: 456-24-6 Molecular Formula: C5H3FN2O2 Molecular Weight (g/mol): 142.089 MDL Number: MFCD03095059 InChI Key: XOZAJNLUAODXSP-UHFFFAOYSA-N Synonym: 6-fluoro-3-nitropyridine, pyridine, 2-fluoro-5-nitro, 2-fluor-5-nitropyridin, 2-fluoro-5-nitro-pyridine, abbypharma ap-15-5253, pubchem1202, acmc-1arnr, 5-nitro-2-fluoropyridine, 2-fluoro-5-nitro pyridine PubChem CID: 95264 IUPAC Name: 2-fluoro-5-nitropyridine SMILES: C1=CC(=NC=C1[N+](=O)[O-])F 5GR 2-Fluoro-5-nitropyridine, 98% 5g

MES hydrate, 99+%, Acros Organics™

CAS: 1266615-59-1 Molecular Formula: C6H13NO4S·xH2O MDL Number: MFCD00149409 Synonym: 4-Morpholinoethanesulfonic acid hydrate, MES 100GR MES hydrate, 99+%, for biochemistry

Adenosine 3',5'-cyclic monophosphate, +99%, ACROS Organics™

CAS: 60-92-4 Molecular Formula: C10H12N5O6P Molecular Weight (g/mol): 329.209 MDL Number: MFCD00005845 InChI Key: IVOMOUWHDPKRLL-KQYNXXCUSA-N Synonym: camp, cyclic amp, adenosine 3',5'-cyclic monophosphate, 3',5'-cyclic amp, adenosine 3',5'-phosphate, adenosine 3',5'-cyclophosphate, cyclic 3',5'-amp, adenosine cyclic monophosphate, adenosine-3',5'-cyclophosphate, cyclic adenosine monophosphate PubChem CID: 6076 ChEBI: CHEBI:17489 IUPAC Name: (4aR,6R,7R,7aS)-6-(6-aminopurin-9-yl)-2-hydroxy-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-7-ol SMILES: C1C2C(C(C(O2)N3C=NC4=C3N=CN=C4N)O)OP(=O)(O1)O 500MG Adenosine 3',5'-cyclic monophosphate, 99+%

Nicotinamide, 99%, Acros Organics™

CAS: 98-92-0 Molecular Formula: C6H6N2O Molecular Weight (g/mol): 122.127 MDL Number: MFCD00006395 InChI Key: DFPAKSUCGFBDDF-UHFFFAOYSA-N Synonym: nicotinamide, niacinamide, 3-pyridinecarboxamide, vitamin pp, nicotinic acid amide, papulex, aminicotin, amixicotyn, nicobion, nicotylamide PubChem CID: 936 ChEBI: CHEBI:17154 IUPAC Name: pyridine-3-carboxamide SMILES: C1=CC(=CN=C1)C(=O)N 500GR Nicotinamide, 99%

5-Chloroindole 99%, ACROS Organics™

CAS: 17422-32-1 Molecular Formula: C8H6ClN Molecular Weight (g/mol): 151.593 MDL Number: MFCD00005672 InChI Key: MYTGFBZJLDLWQG-UHFFFAOYSA-N Synonym: 5-chloroindole, 1h-indole, 5-chloro, 5-chloro indole, 1h-indole, 5-chloro-9ci, 5-chloroindol, 5-chloro-indole, 3fue, zlchem 215, 5-chlor-1h-indole, indole, 5-chloro PubChem CID: 87110 IUPAC Name: 5-chloro-1H-indole SMILES: C1=CC2=C(C=CN2)C=C1Cl 5GR 5-Chloroindole, 99%

Indole-2-carboxylic acid, 99%, ACROS Organics™

CAS: 1477-50-5 Molecular Formula: C9H7NO2 Molecular Weight (g/mol): 161.16 MDL Number: MFCD00005611 InChI Key: HCUARRIEZVDMPT-UHFFFAOYSA-N Synonym: indole-2-carboxylic acid, 2-carboxyindole, 2-indolecarboxylic acid, indol-2-carboxylic acid, 1h-indolecarboxylic acid, indole-2-carboxylate, 2-indolylformic acid, 2-indole carboxylic acid, 1h-indol-2-carbons, carboxyindole PubChem CID: 72899 IUPAC Name: 1H-indole-2-carboxylic acid SMILES: C1=CC=C2C(=C1)C=C(N2)C(=O)O 10GR Indole-2-carboxylic acid, 99%

Alfa Aesar™ Citraconic anhydride, 98%

CAS: 616-02-4 Molecular Formula: C5H4O3 Molecular Weight (g/mol): 112.084 MDL Number: MFCD00005522 InChI Key: AYKYXWQEBUNJCN-UHFFFAOYSA-N Synonym: citraconic anhydride, 2,5-furandione, 3-methyl, 2-methylmaleic anhydride, methylmaleic anhydride, 3-methylmaleic anhydride, citraconic acid anhydride, monomethylmaleic anhydride, maleic anhydride, methyl, 2-methylmaleicanhydride, unii-105np7pmxx PubChem CID: 12012 IUPAC Name: 3-methylfuran-2,5-dione SMILES: CC1=CC(=O)OC1=O CITRACONIC ANHYDRIDE, 98% 500G

1,4-Dioxane, 99.5%, for analysis, stabilized, ACROS Organics™

CAS: 123-91-1 Molecular Formula: C4H8O2 Molecular Weight (g/mol): 88.106 MDL Number: MFCD00006571 InChI Key: RYHBNJHYFVUHQT-UHFFFAOYSA-N Synonym: dioxane, p-dioxane, 1,4-diethylene dioxide, diethylene ether, dioxan, 1,4-dioxacyclohexane, diethylene dioxide, dioxanne, di ethylene oxide, tetrahydro-p-dioxin PubChem CID: 31275 ChEBI: CHEBI:47032 IUPAC Name: 1,4-dioxane SMILES: C1COCCO1 1LT 1,4-Dioxane, 99.5%, for analysis, stabilized

L-Nicotine, 99+%, ACROS Organics™

CAS: 54-11-5 Molecular Formula: C10H14N2 Molecular Weight (g/mol): 162.236 InChI Key: SNICXCGAKADSCV-JTQLQIEISA-N Synonym: nicotine, l-nicotine, --nicotine, s-nicotine, habitrol, s-3-1-methylpyrrolidin-2-yl pyridine, nicoderm, nicotrol, s---nicotine, nicoderm cq PubChem CID: 89594 ChEBI: CHEBI:17688 IUPAC Name: 3-[(2S)-1-methylpyrrolidin-2-yl]pyridine SMILES: CN1CCCC1C2=CN=CC=C2 500GR L-Nicotine, 99+%

2-Chloro-3,5-dinitropyridine, 98+%, Acros Organics™

1GR 2-Chloro-3,5-dinitropyridine, 98+%

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