Heterocyclic Building Blocks

As the most widely used building blocks, heterocyclic building blocks are essential for your organic chemical synthesis reactions. Our extensive catalogue of heterocyclic building blocks include pyridines, pyrrolidines, imidazoles, indole carbazoles, thiophenes, and piperidines.

Key Features and Applications

Heterocycles form the backbone of critical biological structures like DNA, RNA, and chlorophyll, making them indispensable in the realm of organic compounds.
These building blocks are fundamental in developing molecular and polymer organic semiconductors, as well as in the discovery of new pharmaceuticals and therapeutic drugs.
Offering great scaffolds and a variety of functional groups, heterocyclic building blocks are prevalent in natural products, vitamins, and agrochemicals.

Browse Heterocyclic Building Blocks

Related categories: chemistry building blocks, fluorinated building blocks, non-heterocyclic building blocks, monomers, boronates, organotin compounds, dibromo monomers, carbaldehyde monomers, diamines and dianhydrides

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3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-octyldodecyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione CAS 1260685-63-9

3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-octyldodecyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione

CAS 1260685-63-9

BDD CAS 1415929-78-0

BDD

CAS 1415929-78-0

2,5-bis(trimethylstannyl)-thieno[3,2-b]thiophene CAS 469912-82-1

2,5-bis(trimethylstannyl)-thieno[3,2-b]thiophene

CAS 469912-82-1

2,1,3-Benzothiadiazole-4,7-bis(boronic acid pinacol ester) CAS 934365-16-9

2,1,3-Benzothiadiazole-4,7-bis(boronic acid pinacol ester)

CAS 934365-16-9

BDTT CAS 1352642-37-5

BDTT

CAS 1352642-37-5

2,6-dibromo-4,4-bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene CAS 365547-21-3

2,6-dibromo-4,4-bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene

CAS 365547-21-3

9-(heptadecan-9-yl)-2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9H-carbazole CAS 958261-51-3

9-(heptadecan-9-yl)-2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9H-carbazole

CAS 958261-51-3

3-Hexylthiophene CAS 1693-86-3

3-Hexylthiophene

CAS 1693-86-3

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione CAS 32281-36-0

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

CAS 32281-36-0

4H-Cyclopenta[1,2-b:5,4-b']dithiophene CAS 389-58-2

4H-Cyclopenta[1,2-b:5,4-b']dithiophene

CAS 389-58-2

2,2'-bithiophene CAS 492-97-7

2,2'-bithiophene

CAS 492-97-7

Thieno[3,2-b]thiophene-2-carbonitrile CAS 40985-58-8

Thieno[3,2-b]thiophene-2-carbonitrile

CAS 40985-58-8

PCE11 Monomer CAS 1504626-07-6

PCE11 Monomer

CAS 1504626-07-6

NDI-2OD-2Br CAS 1100243-35-3

NDI-2OD-2Br

CAS 1100243-35-3

DPP-HD-2ThBr CAS 1000623-98-2

DPP-HD-2ThBr

CAS 1000623-98-2

DPP-EH-2ThBr CAS 1000623-95-9

DPP-EH-2ThBr

CAS 1000623-95-9

Bromothiophene Benzothiadiazole CAS 288071-87-4

Bromothiophene Benzothiadiazole

CAS 288071-87-4

5,5'-bis(trimethylstannyl)-2,2'-bithiophene CAS 143367-56-0

5,5'-bis(trimethylstannyl)-2,2'-bithiophene

CAS 143367-56-0

4,7-Dibromo-2,1,3-benzothiadiazole CAS 15155-41-6

4,7-Dibromo-2,1,3-benzothiadiazole

CAS 15155-41-6

Thienothiophene, Thieno[3,2-b]thiophene CAS 251-41-2

Thienothiophene, Thieno[3,2-b]thiophene

CAS 251-41-2

DPPDPy2Br CAS 1455028-34-8

DPPDPy2Br

CAS 1455028-34-8

BrIC CAS 507484-47-1

BrIC

CAS 507484-47-1

Br-BT-CHO CAS 1071224-34-4

Br-BT-CHO

CAS 1071224-34-4

BDT-Th(TPS)-Sn CAS 2035466-88-5

BDT-Th(TPS)-Sn

CAS 2035466-88-5

2,5-Dihydro-3,6-di-2-thienyl-pyrrolo[3,4-c]pyrrole-1,4-dione CAS 850583-75-4

2,5-Dihydro-3,6-di-2-thienyl-pyrrolo[3,4-c]pyrrole-1,4-dione

CAS 850583-75-4

2,2′-Bipyridine-5,5′-dicarboxylic acid CAS 1802-30-8

2,2′-Bipyridine-5,5′-dicarboxylic acid

CAS 1802-30-8

N-Boc-trans-4-fluoro-L-proline CAS 203866-14-2

N-Boc-trans-4-fluoro-L-proline

CAS 203866-14-2

N-Boc-4,4-difluoro-L-proline CAS 203866-15-3

N-Boc-4,4-difluoro-L-proline

CAS 203866-15-3

Benzyl (3-Fluoro-4-morpholinophenyl)carbamate CAS 168828-81-7

Benzyl (3-Fluoro-4-morpholinophenyl)carbamate

CAS 168828-81-7

8-Fluoro-4-hydroxy-2-methylquinoline CAS 5288-22-2

8-Fluoro-4-hydroxy-2-methylquinoline

CAS 5288-22-2

7-Fluoroindole CAS 387-44-0

7-Fluoroindole

CAS 387-44-0

7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid CAS 100361-18-0

7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid

CAS 100361-18-0

7-(Diethylamino)-4-(trifluoromethyl)coumarin CAS 41934-47-8

7-(Diethylamino)-4-(trifluoromethyl)coumarin

CAS 41934-47-8

6-Fluoropyridine-2-carbonitrile CAS 3939-15-9

6-Fluoropyridine-2-carbonitrile

CAS 3939-15-9

6-Fluoronicotinic acid CAS 403-45-2

6-Fluoronicotinic acid

CAS 403-45-2

6-Fluoroindole-2-carboxylic acid CAS 3093-97-8

6-Fluoroindole-2-carboxylic acid

CAS 3093-97-8

6-Fluoroindole CAS 399-51-9

6-Fluoroindole

CAS 399-51-9

6-Fluoro-4-hydroxy-2-(trifluoromethyl)quinoline CAS 31009-34-4

6-Fluoro-4-hydroxy-2-(trifluoromethyl)quinoline

CAS 31009-34-4

6-Fluoro-4-chromanone CAS 66892-34-0

6-Fluoro-4-chromanone

CAS 66892-34-0

6-Fluoro-3-(4-piperidinyl)-1,2-benzisoxazole hydrochloride CAS 84163-13-3

6-Fluoro-3-(4-piperidinyl)-1,2-benzisoxazole hydrochloride

CAS 84163-13-3

6-Chloro-8-fluoroquinoline CAS 52200-53-0

6-Chloro-8-fluoroquinoline

CAS 52200-53-0

5-Fluoroindole CAS 399-52-0

5-Fluoroindole

CAS 399-52-0

5-Fluorooxindole CAS 56341-41-4

5-Fluorooxindole

CAS 56341-41-4

5-Fluoroisatin CAS 443-69-6

5-Fluoroisatin

CAS 443-69-6

5-Difluoromethoxy-2-mercaptobenzimidazole CAS 97963-62-7

5-Difluoromethoxy-2-mercaptobenzimidazole

CAS 97963-62-7

5-Cyano-2-fluoropyridine CAS 3939-12-6

5-Cyano-2-fluoropyridine

CAS 3939-12-6

5-Bromo-2-fluoropyrimidine CAS 62802-38-4

5-Bromo-2-fluoropyrimidine

CAS 62802-38-4

5-Bromo-2-fluoropyridine CAS 766-11-0

5-Bromo-2-fluoropyridine

CAS 766-11-0

5-(Trifluoromethyl)-2-pyridone CAS 33252-63-0

5-(Trifluoromethyl)-2-pyridone

CAS 33252-63-0

5-(Trifluoromethoxy)isatin CAS 169037-23-4

5-(Trifluoromethoxy)isatin

CAS 169037-23-4

4-Fluoroindole CAS 387-43-9

4-Fluoroindole

CAS 387-43-9

4-Fluoro-1H-indazole CAS 341-23-1

4-Fluoro-1H-indazole

CAS 341-23-1

4-Chloro-7-trifluoromethylquinoline-3-carboxylic acid ethyl ester CAS 1168-42-3

4-Chloro-7-trifluoromethylquinoline-3-carboxylic acid ethyl ester

CAS 1168-42-3

4-Bromo-8-fluoroquinoline CAS 927800-38-2

4-Bromo-8-fluoroquinoline

CAS 927800-38-2

4-Bromo-6-fluoroquinoline CAS 661463-17-8

4-Bromo-6-fluoroquinoline

CAS 661463-17-8

4-Amino-2-(trifluoromethyl)pyridine CAS 147149-98-2

4-Amino-2-(trifluoromethyl)pyridine

CAS 147149-98-2

4,4′-Bis(trifluoromethyl)-2,2′-bipyridine CAS 142946-79-0

4,4′-Bis(trifluoromethyl)-2,2′-bipyridine

CAS 142946-79-0

3-Fluorobenzoic hydrazide CAS 499-55-8

3-Fluorobenzoic hydrazide

CAS 499-55-8

3-Fluoro-4-morpholinoaniline CAS 93246-53-8

3-Fluoro-4-morpholinoaniline

CAS 93246-53-8

3-Fluoro-2-pyridinecarbonitrile CAS 97509-75-6

3-Fluoro-2-pyridinecarbonitrile

CAS 97509-75-6

3-(Trifluoromethyl)-2-pyridone CAS 22245-83-6

3-(Trifluoromethyl)-2-pyridone

CAS 22245-83-6

3-(4-Fluorophenyl)-1-isopropylindole CAS 93957-49-4

3-(4-Fluorophenyl)-1-isopropylindole

CAS 93957-49-4

3,5-Difluoropyridine-2-carbonitrile CAS 298709-29-2

3,5-Difluoropyridine-2-carbonitrile

CAS 298709-29-2

3,3-Difluoropiperidine hydrochloride CAS 496807-97-7

3,3-Difluoropiperidine hydrochloride

CAS 496807-97-7

3,3-Difluoroazetidine hydrochloride CAS 288315-03-7

3,3-Difluoroazetidine hydrochloride

CAS 288315-03-7

2-Fluoropyridine-3-carbonitrile CAS 3939-13-7

2-Fluoropyridine-3-carbonitrile

CAS 3939-13-7

2-Fluoroadenine CAS 700-49-2

2-Fluoroadenine

CAS 700-49-2

2-Fluoro-9H-carbazole CAS 391-53-7

2-Fluoro-9H-carbazole

CAS 391-53-7

2-Fluoro-5-nitrobenzoic acid CAS 7304-32-7

2-Fluoro-5-nitrobenzoic acid

CAS 7304-32-7

2-Chloro-5-fluoropyrimidine CAS 62802-42-0

2-Chloro-5-fluoropyrimidine

CAS 62802-42-0

2-Bromo-5-fluorobenzonitrile CAS 57381-39-2

2-Bromo-5-fluorobenzonitrile

CAS 57381-39-2

2-Bromo-4-fluoropyridine CAS 357927-50-5

2-Bromo-4-fluoropyridine

CAS 357927-50-5

2-Amino-5-fluorobenzonitrile CAS 61272-77-3

2-Amino-5-fluorobenzonitrile

CAS 61272-77-3

2-Amino-3-fluoropyridine CAS 21717-95-3

2-Amino-3-fluoropyridine

CAS 21717-95-3

2-(Trifluoromethyl)thioxanthen-9-one CAS 1693-28-3

2-(Trifluoromethyl)thioxanthen-9-one

CAS 1693-28-3

2-(Difluoromethyl)benzimidazole CAS 705-09-9

2-(Difluoromethyl)benzimidazole

CAS 705-09-9

2-(2,4-Difluorophenyl)-5-methylpyridine CAS 583052-21-5

2-(2,4-Difluorophenyl)-5-methylpyridine

CAS 583052-21-5

2-(2,4-Difluorophenyl)-5-fluoropyridine CAS 1426047-01-9

2-(2,4-Difluorophenyl)-5-fluoropyridine

CAS 1426047-01-9

2,6-Dichloro-5-fluoro-3-pyridinecarbonitrile CAS 82671-02-1

2,6-Dichloro-5-fluoro-3-pyridinecarbonitrile

CAS 82671-02-1

1-Bis(4-fluorophenyl)methyl piperazine CAS 27469-60-9

1-Bis(4-fluorophenyl)methyl piperazine

CAS 27469-60-9

1-(3-Fluorophenyl)-1H-pyrazole-4-carbaldehyde CAS 936940-82-8

1-(3-Fluorophenyl)-1H-pyrazole-4-carbaldehyde

CAS 936940-82-8

1,4-Bis(4-aminophenoxy)benzene (TPE-Q) CAS 3491-12-1

1,4-Bis(4-aminophenoxy)benzene (TPE-Q)

CAS 3491-12-1

(S)-(+)-3-Fluoropyrrolidine hydrochloride CAS 136725-53-6

(S)-(+)-3-Fluoropyrrolidine hydrochloride

CAS 136725-53-6

(R)-(−)-3-Fluoropyrrolidine hydrochloride CAS 136725-55-8

(R)-(−)-3-Fluoropyrrolidine hydrochloride

CAS 136725-55-8

(5S)-(−)-5-(Trifluoromethyl)-2-pyrrolidinone CAS 1287211-10-2

(5S)-(−)-5-(Trifluoromethyl)-2-pyrrolidinone

CAS 1287211-10-2

TPD-C8 CAS 566939-58-0

TPD-C8

CAS 566939-58-0

Tetrabromothiophene CAS 3958-03-0

Tetrabromothiophene

CAS 3958-03-0

Quinoxaline-2PhO-2Br CAS 565228-31-1

Quinoxaline-2PhO-2Br

CAS 565228-31-1

PTRZ-2Cl CAS 1700-02-3

PTRZ-2Cl

CAS 1700-02-3

NTCDA - 1,4,5,8-Naphthalenetetracarboxylic dianhydride CAS 81-30-1

NTCDA - 1,4,5,8-Naphthalenetetracarboxylic dianhydride

CAS 81-30-1

NDI-2HD-2Br CAS 1459168-68-3

NDI-2HD-2Br

CAS 1459168-68-3

Indolo[3,2-b]carbazole CAS 6336-32-9

Indolo[3,2-b]carbazole

CAS 6336-32-9

Indolo[2,3-a]carbazole CAS 60511-85-5

Indolo[2,3-a]carbazole

CAS 60511-85-5

IDTTB6-2Sn CAS 1420071-65-3

IDTTB6-2Sn

CAS 1420071-65-3

IDTTB6-2CHO CAS 1878125-76-8

IDTTB6-2CHO

CAS 1878125-76-8

IDTTB6-2Br CAS 2227361-27-3

IDTTB6-2Br

CAS 2227361-27-3

IDTB6-2Sn CAS 1252555-61-5

IDTB6-2Sn

CAS 1252555-61-5

IDTB6-2CHO CAS 1884694-93-2

IDTB6-2CHO

CAS 1884694-93-2

IDTB6-2Br CAS 1049034-71-0

IDTB6-2Br

CAS 1049034-71-0

ICz-Br CAS 1174032-81-5

ICz-Br

CAS 1174032-81-5

HDOQx-DBrDF CAS 2269476-12-0

HDOQx-DBrDF

CAS 2269476-12-0

Ethyl 2,5-dibromothiophene-3-carboxylate CAS 289470-44-6

Ethyl 2,5-dibromothiophene-3-carboxylate

CAS 289470-44-6

EHThCHO-Br CAS 1356861-54-5

EHThCHO-Br

CAS 1356861-54-5

EHOThCHO-Br CAS 2055812-54-7

EHOThCHO-Br

CAS 2055812-54-7

DTT, Dithieno[3,2-b:2′,3′-d]thiophene CAS 3593-75-7

DTT, Dithieno[3,2-b:2′,3′-d]thiophene

CAS 3593-75-7

DTS-EH-Sn CAS 1089687-06-8

DTS-EH-Sn

CAS 1089687-06-8

DPP-BO-2ThBr CAS 1224709-68-5

DPP-BO-2ThBr

CAS 1224709-68-5

Dicyclohexyl-3,4,3',4'-tetracarboxylic dianhydride (HBPDA) CAS 122640-83-9

Dicyclohexyl-3,4,3',4'-tetracarboxylic dianhydride (HBPDA)

CAS 122640-83-9

DFBTA-2ThBr-HD CAS 1887135-96-7

DFBTA-2ThBr-HD

CAS 1887135-96-7

D18-2Br CAS 2433725-51-8

D18-2Br

CAS 2433725-51-8

ClIC CAS 2364382-35-2 / 507484-48-2

ClIC

CAS 2364382-35-2 / 507484-48-2

CDT-EH-Sn CAS 920504-00-3

CDT-EH-Sn

CAS 920504-00-3

BT-HD-2Br

BT-HD-2Br

BT-C14-2Br CAS 888491-16-5

BT-C14-2Br

CAS 888491-16-5

BT-C12-2Br CAS 753470-95-0

BT-C12-2Br

CAS 753470-95-0

BPPTRZ-2Cl CAS 1472062-94-4

BPPTRZ-2Cl

CAS 1472062-94-4

Bicyclo(2.2.2)oct-7-ene-2,3,5,6-tetracarboxylic acid dianhydride (COeDA) CAS 1719-83-1

Bicyclo(2.2.2)oct-7-ene-2,3,5,6-tetracarboxylic acid dianhydride (COeDA)

CAS 1719-83-1

Benzodithiophene-2THBr-4EH CAS 1439937-07-1

Benzodithiophene-2THBr-4EH

CAS 1439937-07-1

BDTT-Cl-Sn CAS 2239295-69-1

BDTT-Cl-Sn

CAS 2239295-69-1

BDTOEHSn CAS 1160823-78-8

BDTOEHSn

CAS 1160823-78-8

BBT-2C6ThBr

BBT-2C6ThBr

6,9-bis(5-bromo-4-(2-butyloctyl)thiophen-2-yl)dithieno[3,2-f:2',3'-h]quinoxaline

6,9-bis(5-bromo-4-(2-butyloctyl)thiophen-2-yl)dithieno[3,2-f:2',3'-h]quinoxaline

6,6′-Dibromoisoindigo CAS 1147124-21-7

6,6′-Dibromoisoindigo

CAS 1147124-21-7

5,5′′-Dibromo-2,2′:5′,2′′-terthiophene CAS 98057-08-0

5,5′′-Dibromo-2,2′:5′,2′′-terthiophene

CAS 98057-08-0

5,5'-Dimethyl-2,2'-bipyridine CAS 1762-34-1

5,5'-Dimethyl-2,2'-bipyridine

CAS 1762-34-1

5,5'-Dibromo-4,4'-dihexyl-2,2'-bithiophene CAS 214493-03-5

5,5'-Dibromo-4,4'-dihexyl-2,2'-bithiophene

CAS 214493-03-5

5,5'-Dibromo-3,3'-bis(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)-2,2'-bithiophene CAS 1974310-58-1

5,5'-Dibromo-3,3'-bis(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)-2,2'-bithiophene

CAS 1974310-58-1

5,5'-Dibromo-2,2'-bithiophene CAS 4805-22-5

5,5'-Dibromo-2,2'-bithiophene

CAS 4805-22-5

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