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Dithiolanes

Organosulfur heterocyclic compounds that consist of a five-membered ring with two sulfur atoms and three carbon atoms.
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1

MilliporeSigma™ 5-Carboxyfluorescein Diacetate, Calbiochem™,

CAS: 79955-27-4 Molecular Formula: C25H16O9 Molecular Weight (g/mol): 460.394 InChI Key: WPUZGNPQMIWOHE-UHFFFAOYSA-N Synonym: 5-carboxyfluorescein diacetate,5-cfda,3',6'-diacetoxy-3-oxo-3h-spiro isobenzofuran-1,9'-xanthene-5-carboxylic acid,5-carboxy-di-o-acetylfluorescein,3',6'-diacetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,cfda-5,spiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylicacid, 3',6'-bis acetyloxy-3-oxo,3',6'-bis acetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-bis acetyloxy-3-oxospiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylic acid,3',6'-diacetoxy-3-oxo-3h-spiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid PubChem CID: 133314 IUPAC Name: 3',6'-diacetyloxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid SMILES: CC(=O)OC1=CC2=C(C=C1)C3(C4=C(C=C(C=C4)C(=O)O)C(=O)O3)C5=C(O2)C=C(C=C5)OC(=O)C

PubChem CID 133314
CAS 79955-27-4
Molecular Weight (g/mol) 460.394
SMILES CC(=O)OC1=CC2=C(C=C1)C3(C4=C(C=C(C=C4)C(=O)O)C(=O)O3)C5=C(O2)C=C(C=C5)OC(=O)C
Synonym 5-carboxyfluorescein diacetate,5-cfda,3',6'-diacetoxy-3-oxo-3h-spiro isobenzofuran-1,9'-xanthene-5-carboxylic acid,5-carboxy-di-o-acetylfluorescein,3',6'-diacetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,cfda-5,spiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylicacid, 3',6'-bis acetyloxy-3-oxo,3',6'-bis acetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-bis acetyloxy-3-oxospiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylic acid,3',6'-diacetoxy-3-oxo-3h-spiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid
IUPAC Name 3',6'-diacetyloxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid
InChI Key WPUZGNPQMIWOHE-UHFFFAOYSA-N
Molecular Formula C25H16O9
2

5-Carboxyfluorescein Diacetate 93.0+%, TCI America™
SDP

CAS: 79955-27-4 Molecular Formula: C25H16O9 Molecular Weight (g/mol): 460.394 MDL Number: MFCD00036872 InChI Key: WPUZGNPQMIWOHE-UHFFFAOYSA-N Synonym: 5-carboxyfluorescein diacetate,5-cfda,3',6'-diacetoxy-3-oxo-3h-spiro isobenzofuran-1,9'-xanthene-5-carboxylic acid,5-carboxy-di-o-acetylfluorescein,3',6'-diacetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,cfda-5,spiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylicacid, 3',6'-bis acetyloxy-3-oxo,3',6'-bis acetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-bis acetyloxy-3-oxospiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylic acid,3',6'-diacetoxy-3-oxo-3h-spiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid PubChem CID: 133314 IUPAC Name: 3',6'-diacetyloxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid SMILES: CC(=O)OC1=CC2=C(C=C1)C3(C4=C(C=C(C=C4)C(=O)O)C(=O)O3)C5=C(O2)C=C(C=C5)OC(=O)C

PubChem CID 133314
CAS 79955-27-4
Molecular Weight (g/mol) 460.394
MDL Number MFCD00036872
SMILES CC(=O)OC1=CC2=C(C=C1)C3(C4=C(C=C(C=C4)C(=O)O)C(=O)O3)C5=C(O2)C=C(C=C5)OC(=O)C
Synonym 5-carboxyfluorescein diacetate,5-cfda,3',6'-diacetoxy-3-oxo-3h-spiro isobenzofuran-1,9'-xanthene-5-carboxylic acid,5-carboxy-di-o-acetylfluorescein,3',6'-diacetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,cfda-5,spiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylicacid, 3',6'-bis acetyloxy-3-oxo,3',6'-bis acetyloxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-bis acetyloxy-3-oxospiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylic acid,3',6'-diacetoxy-3-oxo-3h-spiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid
IUPAC Name 3',6'-diacetyloxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid
InChI Key WPUZGNPQMIWOHE-UHFFFAOYSA-N
Molecular Formula C25H16O9
3

5-Carboxyfluorescein N-Succinimidyl Ester 95.0+%, TCI America™
SDP

CAS: 92557-80-7 Molecular Formula: C25H15NO9 Molecular Weight (g/mol): 473.393 MDL Number: MFCD00077322 InChI Key: GECIDMICWWDIBO-UHFFFAOYSA-N PubChem CID: 2762599 IUPAC Name: (2,5-dioxopyrrolidin-1-yl) 3',6'-dihydroxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylate SMILES: C1CC(=O)N(C1=O)OC(=O)C2=CC3=C(C=C2)C4(C5=C(C=C(C=C5)O)OC6=C4C=CC(=C6)O)OC3=O

PubChem CID 2762599
CAS 92557-80-7
Molecular Weight (g/mol) 473.393
MDL Number MFCD00077322
SMILES C1CC(=O)N(C1=O)OC(=O)C2=CC3=C(C=C2)C4(C5=C(C=C(C=C5)O)OC6=C4C=CC(=C6)O)OC3=O
IUPAC Name (2,5-dioxopyrrolidin-1-yl) 3',6'-dihydroxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylate
InChI Key GECIDMICWWDIBO-UHFFFAOYSA-N
Molecular Formula C25H15NO9
4

Biphenyl-3,3',5,5'-tetracarboxylic Acid 98.0+%, TCI America™
SDP

CAS: 4371-28-2 Molecular Formula: C16H10O8 Molecular Weight (g/mol): 330.248 MDL Number: MFCD16621475 InChI Key: QURGMSIQFRADOZ-UHFFFAOYSA-N PubChem CID: 15840397 IUPAC Name: 5-(3,5-dicarboxyphenyl)benzene-1,3-dicarboxylic acid SMILES: C1=C(C=C(C=C1C(=O)O)C(=O)O)C2=CC(=CC(=C2)C(=O)O)C(=O)O

PubChem CID 15840397
CAS 4371-28-2
Molecular Weight (g/mol) 330.248
MDL Number MFCD16621475
SMILES C1=C(C=C(C=C1C(=O)O)C(=O)O)C2=CC(=CC(=C2)C(=O)O)C(=O)O
IUPAC Name 5-(3,5-dicarboxyphenyl)benzene-1,3-dicarboxylic acid
InChI Key QURGMSIQFRADOZ-UHFFFAOYSA-N
Molecular Formula C16H10O8
5

(R)-alpha-Lipoic Acid 98.0+%, TCI America™
SDP

CAS: 1200-22-2 Molecular Formula: C8H14O2S2 Molecular Weight (g/mol): 206.32 MDL Number: MFCD01631142 InChI Key: AGBQKNBQESQNJD-SSDOTTSWSA-N Synonym: (R)-Thioctic Acid, (R)-1,2-Dithiolane-3-valeric Acid PubChem CID: 6112 ChEBI: CHEBI:30314 IUPAC Name: 5-[(3R)-1,2-dithiolan-3-yl]pentanoic acid SMILES: OC(=O)CCCC[C@@H]1CCSS1

PubChem CID 6112
CAS 1200-22-2
Molecular Weight (g/mol) 206.32
ChEBI CHEBI:30314
MDL Number MFCD01631142
SMILES OC(=O)CCCC[C@@H]1CCSS1
Synonym (R)-Thioctic Acid, (R)-1,2-Dithiolane-3-valeric Acid
IUPAC Name 5-[(3R)-1,2-dithiolan-3-yl]pentanoic acid
InChI Key AGBQKNBQESQNJD-SSDOTTSWSA-N
Molecular Formula C8H14O2S2
6

5-Carboxyfluorescein Hydrate 97.0+%, TCI America™
SDP

CAS: 76823-03-5 Molecular Formula: C21H12O7 Molecular Weight (g/mol): 376.32 MDL Number: MFCD00036874 InChI Key: NJYVEMPWNAYQQN-UHFFFAOYSA-N Synonym: 5-carboxyfluorescein,5-fam,4-carboxyfluorescein,4 5-carboxyfluorescein,3',6'-dihydroxy-3-oxo-3h-spiro isobenzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-dihydroxy-3-oxo-3h-spiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-dihydroxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,spiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylic acid, 3',6-dihydroxy-3-oxo,bidd:gt0758,5-carboxy fluorescein; 5-fam PubChem CID: 123755 ChEBI: CHEBI:51617 IUPAC Name: 3',6'-dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid SMILES: OC(=O)C1=CC=C2C(=C1)C(=O)OC21C2=CC=C(O)C=C2OC2=CC(O)=CC=C12

PubChem CID 123755
CAS 76823-03-5
Molecular Weight (g/mol) 376.32
ChEBI CHEBI:51617
MDL Number MFCD00036874
SMILES OC(=O)C1=CC=C2C(=C1)C(=O)OC21C2=CC=C(O)C=C2OC2=CC(O)=CC=C12
Synonym 5-carboxyfluorescein,5-fam,4-carboxyfluorescein,4 5-carboxyfluorescein,3',6'-dihydroxy-3-oxo-3h-spiro isobenzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-dihydroxy-3-oxo-3h-spiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,3',6'-dihydroxy-3-oxospiro 2-benzofuran-1,9'-xanthene-5-carboxylic acid,spiro isobenzofuran-1 3h ,9'-9h xanthene-5-carboxylic acid, 3',6-dihydroxy-3-oxo,bidd:gt0758,5-carboxy fluorescein; 5-fam
IUPAC Name 3',6'-dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid
InChI Key NJYVEMPWNAYQQN-UHFFFAOYSA-N
Molecular Formula C21H12O7
7

4-Hydroxyisophthalic Acid 98.0+%, TCI America™
SDP

CAS: 636-46-4 Molecular Formula: C8H6O5 Molecular Weight (g/mol): 182.131 MDL Number: MFCD00010391 InChI Key: BCEQKAQCUWUNML-UHFFFAOYSA-N Synonym: 4-hydroxyisophthalic acid,eupirina,4-hydroxy-m-phthalic acid,isophthalic acid, 4-hydroxy,4-hipa,4-hydroxy-1,3-benzenedicarboxylic acid,unii-p87ff77o00,1,3-benzenedicarboxylic acid, 4-hydroxy,4-hydroxy isophthalic acid,4-hydroxyisophthalate PubChem CID: 12490 IUPAC Name: 4-hydroxybenzene-1,3-dicarboxylic acid SMILES: C1=CC(=C(C=C1C(=O)O)C(=O)O)O

PubChem CID 12490
CAS 636-46-4
Molecular Weight (g/mol) 182.131
MDL Number MFCD00010391
SMILES C1=CC(=C(C=C1C(=O)O)C(=O)O)O
Synonym 4-hydroxyisophthalic acid,eupirina,4-hydroxy-m-phthalic acid,isophthalic acid, 4-hydroxy,4-hipa,4-hydroxy-1,3-benzenedicarboxylic acid,unii-p87ff77o00,1,3-benzenedicarboxylic acid, 4-hydroxy,4-hydroxy isophthalic acid,4-hydroxyisophthalate
IUPAC Name 4-hydroxybenzene-1,3-dicarboxylic acid
InChI Key BCEQKAQCUWUNML-UHFFFAOYSA-N
Molecular Formula C8H6O5
8

Sigma Aldrich Fine Chemicals Biosciences (R)-(+)-alpha-Lipoic acid >=98.0% (HPLC) | 1200-22-2 | MFCD01631142 | 500MG

(R)-(+)-alpha-Lipoic acid >=98.0% (HPLC) | Purity: >=98.0% (HPLC) | Mol Wt: 206.33 | 1200-22-2 | MFCD01631142 | 500MG

ENCOMPASS
9

Sigma Aldrich Fine Chemicals Biosciences 5-Carboxyfluorescein BioReagent, suitable for fluorescence, >=95% (HPLC) | 76823-03-5 | MFCD00036874 | 100MG

5-Carboxyfluorescein BioReagent, suitable for fluorescence, >=95% (HPLC) | Purity: >=95% (HPLC) | Mol Wt: 376.32 | 76823-03-5 | MFCD00036874 | 100MG

ENCOMPASS
10

Medchemexpress LLC R-(+)-α-lipoic acid | 1200-22-2 | MFCD01631142 | 99.4% | 206.33 | C8H14O2S2 | 10 MG
SDP

Analytical standard of (R)-(+)-α-lipoic acid intended for research and analytical applications such as HPLC, GC, and MS. It is used as a quantitative and qualitative reference material for method development, calibration, and validation in biochemical and pharmaceutical analysis.

  • High purity suitable for analytical assays (99.36%).
  • Defined chemical identity for accurate reference (C8H14O2S2, MW 206.33).
  • Compact 10 mg packaging for analytical use and method validation.
  • Stable under recommended storage; consult the certificate of analysis for handling.

ENCOMPASS_PREFERRED
11

Medchemexpress LLC (S)-thioctic acid | 1077-27-6 | MFCD01863481 | >=97.0% | 206.33 g/mol | C8H14O2S2 | 1 ML
SDP

(S)-Thioctic acid (S-lipoic acid) is the S-enantiomer of lipoic acid, a thiol-containing antioxidant and enzymatic cofactor used in biochemical research. It participates in redox chemistry and mitochondrial enzyme function. The product is supplied as a ready-to-use 10 mM solution in DMSO and as solids for preparative or analytical work, suitable for enzymology and antioxidant studies.

  • Chiral antioxidant and mitochondrial cofactor
  • Available as 10 mM solution in DMSO for immediate use
  • Also available as solid for bulk or formulation
  • Useful for enzymology, redox, and antioxidant assays
  • High purity (≥97%) suitable for HPLC applications
  • Stable when stored under recommended conditions

ENCOMPASS_PREFERRED