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Bi- and oligothiophenes

Organic compounds that contain two or more thiophene rings bridged together; thiophenes are a five-membered ring with four carbon atoms and one sulfur atom. Oligothiophenes are important organic electronic materials.
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1

2,2'-Bithiophene-5-boronic acid pinacol ester, 98%

CAS: 479719-88-5 Molecular Formula: C14H17BO2S2 Molecular Weight (g/mol): 292.22 MDL Number: MFCD04039974 InChI Key: HPOQARMSOPOZMW-UHFFFAOYSA-N Synonym: 2,2'-bithiophene-5-boronic acid pinacol ester,5-4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-2,2'-bithiophene,2-2,2'-bithiophen-5-yl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane,4,4,5,5-tetramethyl-2-5-thiophen-2-yl thiophen-2-yl-1,3,2-dioxaborolane,acmc-209kb7,4,4,5,5-tetramethyl-2-5-thiophen-2-ylthiophen-2-yl-1,3,2-dioxaborolane,2,2'-bithiophene-5'-boronic acid pinacol ester PubChem CID: 3592790 IUPAC Name: 4,4,5,5-tetramethyl-2-(5-thiophen-2-ylthiophen-2-yl)-1,3,2-dioxaborolane SMILES: CC1(C)OB(OC1(C)C)C1=CC=C(S1)C1=CC=CS1

PubChem CID 3592790
CAS 479719-88-5
Molecular Weight (g/mol) 292.22
MDL Number MFCD04039974
SMILES CC1(C)OB(OC1(C)C)C1=CC=C(S1)C1=CC=CS1
Synonym 2,2'-bithiophene-5-boronic acid pinacol ester,5-4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-2,2'-bithiophene,2-2,2'-bithiophen-5-yl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane,4,4,5,5-tetramethyl-2-5-thiophen-2-yl thiophen-2-yl-1,3,2-dioxaborolane,acmc-209kb7,4,4,5,5-tetramethyl-2-5-thiophen-2-ylthiophen-2-yl-1,3,2-dioxaborolane,2,2'-bithiophene-5'-boronic acid pinacol ester
IUPAC Name 4,4,5,5-tetramethyl-2-(5-thiophen-2-ylthiophen-2-yl)-1,3,2-dioxaborolane
InChI Key HPOQARMSOPOZMW-UHFFFAOYSA-N
Molecular Formula C14H17BO2S2
2

2,2-Bithiophene-5-carboxylic acid, 97%, Thermo Scientific™

CAS: 2060-55-1 Molecular Formula: C9H6O2S2 Molecular Weight (g/mol): 210.265 InChI Key: PTNWHEHDBNNKEO-UHFFFAOYSA-N Synonym: 2,2'-bithiophene-5-carboxylic acid,5-thiophen-2-yl thiophene-2-carboxylic acid,2,2-bithiophene-5-carboxylic acid,2,2'-bithiophene-5-carboxylicacid,2,2' bithiophenyl-5-carboxylic acid,2,2'-bithiophene-5-ca,5-carboxy-2,2'-bithiophene,2,2'-bithienyl-5'-carboxylic,5-2-thienyl-2-thiophenecarboxylic acid PubChem CID: 150965 IUPAC Name: 5-thiophen-2-ylthiophene-2-carboxylic acid SMILES: C1=CSC(=C1)C2=CC=C(S2)C(=O)O

PubChem CID 150965
CAS 2060-55-1
Molecular Weight (g/mol) 210.265
SMILES C1=CSC(=C1)C2=CC=C(S2)C(=O)O
Synonym 2,2'-bithiophene-5-carboxylic acid,5-thiophen-2-yl thiophene-2-carboxylic acid,2,2-bithiophene-5-carboxylic acid,2,2'-bithiophene-5-carboxylicacid,2,2' bithiophenyl-5-carboxylic acid,2,2'-bithiophene-5-ca,5-carboxy-2,2'-bithiophene,2,2'-bithienyl-5'-carboxylic,5-2-thienyl-2-thiophenecarboxylic acid
IUPAC Name 5-thiophen-2-ylthiophene-2-carboxylic acid
InChI Key PTNWHEHDBNNKEO-UHFFFAOYSA-N
Molecular Formula C9H6O2S2
3

5'-Formyl-2,2'-bithiophene-5-boronic Acid (contains varying amounts of Anhydride), TCI America™
SDP

CAS: 1369328-62-0 Molecular Formula: C9H7BO3S2 Molecular Weight (g/mol): 238.082 InChI Key: RDIOTSOSMWVMSX-UHFFFAOYSA-N Synonym: 5-(5-Formyl-2-thienyl)-2-thiopheneboronic Acid PubChem CID: 44629969 IUPAC Name: [5-(5-formylthiophen-2-yl)thiophen-2-yl]boronic acid SMILES: B(C1=CC=C(S1)C2=CC=C(S2)C=O)(O)O

PubChem CID 44629969
CAS 1369328-62-0
Molecular Weight (g/mol) 238.082
SMILES B(C1=CC=C(S1)C2=CC=C(S2)C=O)(O)O
Synonym 5-(5-Formyl-2-thienyl)-2-thiopheneboronic Acid
IUPAC Name [5-(5-formylthiophen-2-yl)thiophen-2-yl]boronic acid
InChI Key RDIOTSOSMWVMSX-UHFFFAOYSA-N
Molecular Formula C9H7BO3S2
4
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Sigma Aldrich (4-bromo-5-methyl-pyrazol-1-yl)-acetic acid

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS
5

5,5'-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene 98.0+%, TCI America™
SDP

CAS: 239075-02-6 Molecular Formula: C20H28B2O4S2 Molecular Weight (g/mol): 418.18 MDL Number: MFCD06798112 InChI Key: XWWXVHGWYCXJCJ-UHFFFAOYSA-N Synonym: 2,2′C-Bithiophene-5,5′C-diboronic Acid Bis(pinacol) Ester PubChem CID: 10938646 IUPAC Name: 4,4,5,5-tetramethyl-2-[5-[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-2-yl]thiophen-2-yl]-1,3,2-dioxaborolane SMILES: B1(OC(C(O1)(C)C)(C)C)C2=CC=C(S2)C3=CC=C(S3)B4OC(C(O4)(C)C)(C)C

PubChem CID 10938646
CAS 239075-02-6
Molecular Weight (g/mol) 418.18
MDL Number MFCD06798112
SMILES B1(OC(C(O1)(C)C)(C)C)C2=CC=C(S2)C3=CC=C(S3)B4OC(C(O4)(C)C)(C)C
Synonym 2,2′C-Bithiophene-5,5′C-diboronic Acid Bis(pinacol) Ester
IUPAC Name 4,4,5,5-tetramethyl-2-[5-[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-2-yl]thiophen-2-yl]-1,3,2-dioxaborolane
InChI Key XWWXVHGWYCXJCJ-UHFFFAOYSA-N
Molecular Formula C20H28B2O4S2
6

5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene 98.0+%, TCI America™
SDP

CAS: 479719-88-5 Molecular Formula: C14H17BO2S2 Molecular Weight (g/mol): 292.22 MDL Number: MFCD04039974 InChI Key: HPOQARMSOPOZMW-UHFFFAOYSA-N Synonym: 2,2'-bithiophene-5-boronic acid pinacol ester,5-4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-2,2'-bithiophene,2-2,2'-bithiophen-5-yl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane,4,4,5,5-tetramethyl-2-5-thiophen-2-yl thiophen-2-yl-1,3,2-dioxaborolane,acmc-209kb7,4,4,5,5-tetramethyl-2-5-thiophen-2-ylthiophen-2-yl-1,3,2-dioxaborolane,2,2'-bithiophene-5'-boronic acid pinacol ester PubChem CID: 3592790 IUPAC Name: 2-{[2,2'-bithiophen]-5-yl}-4,4,5,5-tetramethyl-1,3,2-dioxaborolane SMILES: CC1(C)OB(OC1(C)C)C1=CC=C(S1)C1=CC=CS1

PubChem CID 3592790
CAS 479719-88-5
Molecular Weight (g/mol) 292.22
MDL Number MFCD04039974
SMILES CC1(C)OB(OC1(C)C)C1=CC=C(S1)C1=CC=CS1
Synonym 2,2'-bithiophene-5-boronic acid pinacol ester,5-4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-2,2'-bithiophene,2-2,2'-bithiophen-5-yl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane,4,4,5,5-tetramethyl-2-5-thiophen-2-yl thiophen-2-yl-1,3,2-dioxaborolane,acmc-209kb7,4,4,5,5-tetramethyl-2-5-thiophen-2-ylthiophen-2-yl-1,3,2-dioxaborolane,2,2'-bithiophene-5'-boronic acid pinacol ester
IUPAC Name 2-{[2,2'-bithiophen]-5-yl}-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
InChI Key HPOQARMSOPOZMW-UHFFFAOYSA-N
Molecular Formula C14H17BO2S2
7

eMolecules​ 2,2'-Bithiophene-5,5'-diboronic acid | 189358-30-3 | MFCD11504864 | 1g

Combi-Blocks | 2,2'-Bithiophene-5,5'-diboronic acid | 1g | 117526245 | BB-8883 | 95.000 | 189358-30-3 | MFCD11504864 | 253.890 | C8H8B2O4S2

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ENCOMPASS_PREFERRED
8

eMolecules​ 2-Hydroxybenzene-1,3-dicarboxylic acid | 606-19-9 | MFCD01717559 | 1g

Combi-Blocks | 2-Hydroxybenzene-1,3-dicarboxylic acid | 1g | 415501749 | CA-5885 | 96.000 | 606-19-9 | MFCD01717559 | 182.131 | C8H6O5

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ENCOMPASS_PREFERRED
9

eMolecules​ 2,2'-Bithiophene-5-carboxylic acid | 2060-55-1 | MFCD00159571 | 1g

Combi-Blocks | 2,2'-Bithiophene-5-carboxylic acid | 1g | 342864778 | QI-1438 | 96.000 | 2060-55-1 | MFCD00159571 | 210.270 | C9H6O2S2

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ENCOMPASS_PREFERRED
10

eMolecules​ 2-Amino-pyridine-3,5-dicarboxylic acid hydrochloride | 1172443-67-2 | MFCD09910169 | 5g

J & W PharmLab LLC | 2-Amino-pyridine-3,5-dicarboxylic acid hydrochloride | 5g | 289354981 | 69R0261S | 97.000 | 1172443-67-2 | MFCD09910169 | 218.590 | C7H7ClN2O4

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ENCOMPASS_PREFERRED
11

eMolecules​ (?)-trans-4-(3-Thienyl)pyrrolidine-3-carboxylic acid hydrochloride | 1864003-47-3 | 250MG

Chem-Impex | (?)-trans-4-(3-Thienyl)pyrrolidine-3-carboxylic acid hydrochloride | 250MG | 1864003-47-3 | MFCD09728850 | MW:230.271

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ENCOMPASS_PREFERRED
12

eMolecules​ 2-Amino-pyridine-3,5-dicarboxylic acid dimethyl ester | 1187930-77-3 | MFCD12913798 | 5g

J & W PharmLab LLC | 2-Amino-pyridine-3,5-dicarboxylic acid dimethyl ester | 5g | 289355119 | 69R0434 | 96.000 | 1187930-77-3 | MFCD12913798 | 210.189 | C9H10N2O4

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ENCOMPASS_PREFERRED
13

eMolecules​ Ambeed / [22-Bithiophene]-5-carboxylic acid / 100mg / 592385643 / A124711 / / 2060-55-1 / MFCD00159571 / 210.270 / C9H6O2S2

Ambeed / [22-Bithiophene]-5-carboxylic acid / 100mg / 592385643 / A124711 / / 2060-55-1 / MFCD00159571 / 210.270 / C9H6O2S2

ENCOMPASS_PREFERRED
14

Chemscene ChemScene | (9,9-Dihexyl-9H-fluorene-2,7-diyl)diboronic acid | 5G | CS-0152301 | 0.98 | 203927-98-4| MFCD03427279 | 422.17
SDP

ChemScene | (9,9-Dihexyl-9H-fluorene-2,7-diyl)diboronic acid | 5G | CS-0152301 | 0.98 | 203927-98-4| MFCD03427279 | 422.17

ENCOMPASS_PREFERRED
15

eMolecules​ AstaTech / 99-DIHEXYL-9H-FLUOREN-2-BORONIC ACID / 0.1g / 718059608 / F16253 / 95.000 / 371193-08-7 / MFCD18910616 / 378.360 / C25H35BO2

AstaTech / 99-DIHEXYL-9H-FLUOREN-2-BORONIC ACID / 0.1g / 718059608 / F16253 / 95.000 / 371193-08-7 / MFCD18910616 / 378.360 / C25H35BO2

ENCOMPASS_PREFERRED