Phenols

Medchemexpress LLC DABCO-bis(sulfur dioxide) | 119752-83-9 | MFCD22377802 | 97.0% | 240.3 g/mol | C6H12N2O4S2 | 50 G

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DABCO-bis(sulfur dioxide) (DABSO) is a bench-stable, crystalline reagent that serves as a convenient solid source of sulfur dioxide for organic synthesis. It is commonly used to introduce sulfonyl functionality and to prepare sulfonamides and sulfones without handling gaseous SO2.

• Bench-stable solid source of sulfur dioxide.
• Enables preparation of sulfonamides and sulfones.
• Eliminates the need to handle gaseous sulfur dioxide.
• High purity suitable for synthetic applications (97.0%).
• Crystalline solid simplifies storage and handling.

Medchemexpress LLC Dabco-bis(sulfur dioxide) | 119752-83-9 | MFCD22377802 | 97.0% | 240.31 g/mol | C6H12N2O4S2 | 10 G

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DABCO-Bis(sulfur dioxide) (DABSO) is a bench-stable, crystalline adduct used as a convenient solid source of sulfur dioxide for organic synthesis. It enables safe, controlled introduction of SO2 into laboratory reactions, supporting the synthesis of sulfonyl-containing compounds such as sulfonamides and sulfamides. The material is intended for research use and is supplied with supporting documentation including a safety data sheet and certificate of analysis.

• Bench-stable solid source of sulfur dioxide for synthesis.
• Enables preparation of sulfonamides and sulfamides.
• More convenient and safer to handle than gaseous SO2.
• High purity suitable for research applications.
• Available in multiple laboratory pack sizes for scalability.

Medchemexpress LLC 1,4-diazoniabicyclo[2.2.2]octane, 1,4-disulfino-, bis(inner salt) | 119752-83-9 | MFCD22377802 | 97.0% | 240.31 | C6H12N2O4S2 | 25 G

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DABCO-Bis(sulfur dioxide) (DABSO) is a stable crystalline adduct of 1,4-diazabicyclo[2.2.2]octane and sulfur dioxide that provides a convenient, easy-to-handle solid source of SO2 for laboratory organic synthesis. It releases sulfur dioxide under reaction conditions and is commonly used in sulfonylation, sulfonamide, and sulfone formation.

• Solid, easy-to-weigh source of sulfur dioxide.
• Stable, safer alternative to handling gaseous SO2.
• High purity (97.0%) suitable for synthetic applications.
• White to off-white solid for simple storage and handling.
• Applicable to sulfonylation, sulfonamide, and sulfone syntheses.
• Molecular formula C6H12N2O4S2; molecular weight ~240.31 g/mol.

Medchemexpress LLC 1,4-diazoniabicyclo[2.2.2]octane, 1,4-disulfino-, bis(inner salt) | 119752-83-9 | MFCD22377802 | 97.0% | 240.31 | C6H12N2O4S2 | 100 G

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DABCO-Bis(sulfur dioxide) (DABSO) is a bench-stable, crystalline adduct of 1,4-diazabicyclo[2.2.2]octane and sulfur dioxide that provides a convenient, solid source of SO2 for organic synthesis. It is commonly used to introduce sulfonyl groups in the preparation of sulfones, sulfonamides, and related derivatives, allowing safer and more manageable handling than gaseous sulfur dioxide.

• Bench-stable crystalline solid for simple handling.
• Provides a convenient solid source of sulfur dioxide.
• Enables introduction of sulfonyl functionality in synthesis.
• Suitable for preparation of sulfones and sulfonamides.
• Off-white solid with typical purity of 97.0%.
• Available in multiple laboratory pack sizes including 100 g.

Medchemexpress LLC 1,4-diazoniabicyclo[2.2.2]octane, 1,4-disulfino-, bis(inner salt) | 119752-83-9 | MFCD22377802 | 97.0% | 240.31 | C6H12N2O4S2 | 250 G

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DABCO-Bis(sulfur dioxide) is a bench-stable crystalline adduct that acts as a convenient, solid-source surrogate for sulfur dioxide in organic synthesis. It enables controlled SO2 transfer for the preparation of sulfonamides, sulfones, and sulfinate intermediates, simplifying handling compared with gaseous SO2.

• Bench-stable solid for safer handling and storage.
• Provides controlled sulfur dioxide transfer in reactions.
• Suitable for preparation of sulfonamides and sulfones.
• Reported purity 97.0%.
• Molecular weight 240.31; formula C6H12N2O4S2.
• Available in multiple laboratory-scale pack sizes.

Medchemexpress LLC 3H-1,2-benzodithiol-3-one-1,1-dioxide | 66304-01-6 | MFCD00132960 | 98.0% | 200.24 | C7H4O3S2 | 10 G

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Beaucage reagent is an organosulfur compound used in nucleic acid chemistry as a DNA cleavage agent and as a sulfurizing reagent in oligonucleotide synthesis. It is supplied in both solid and solution formats for laboratory research use, with high purity suitable for analytical and preparative applications.

• High purity suitable for research applications.
• Available as solid and as a 10 mM solution in DMSO.
• Useful for DNA cleavage and oligonucleotide sulfurization steps.
• Provided in multiple pack sizes for flexibility in experiments.
• Supplied with technical documentation and safety data for proper handling.

Medchemexpress LLC Dilauryl thiodipropi 500g

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Dilauryl thiodipropionate (DLTDP) which is a sulfur-containing antioxidant commonly used to stabilize polymers and plastics against degradation caused by heat oxygen and UV light acts to scavenge free radicals and others that may cause polymer chain scission and cross-linked active substances in addition DLTDP has been used as an additive to lubricants oils and other industrial fluids to improve their oxidation stability the long hydrocarbon chain in DLTDP makes it low volatility and compatible with many materials and Good compatibility with substrates

Medchemexpress LLC Dehydrothio-p-toluidine | 92-36-4 | MFCD00005780 | 99.9% | 240.33 g/mol | C14H12N2S | 50 G

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Dehydrothio-p-toluidine is a chemical intermediate used in the production of dyestuffs and related sulfur-containing dyes. Supplied with high reported purity, this material should be handled with care because inhalation toxicity has been reported in acute and subchronic exposures.

• Used as an intermediate in dyestuff production.
• Reported purity 99.9% (typical).
• Available in small pack sizes suitable for laboratory use.
• CAS number 92-36-4 for unambiguous identification.
• Handle with appropriate respiratory protection due to inhalation toxicity.

Medchemexpress LLC Thianthrene | 92-85-3 | MFCD00005065 | 100.0% | 216.32 g/mol | C12H8S2 | 25 G

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Thianthrene (CAS 92-85-3) is a sulfur-containing tricyclic research chemical used in biochemical assays and reported as an inhibitor of Leishmania donovani pteridine reductase 1 (PTR1). It is supplied for research and analytical applications with high reported purity and is available in solution and solid forms to support various laboratory workflows.

• High purity suitable for biochemical research.
• Reported PTR1 inhibitory activity for parasite biology studies.
• Available as DMSO solution and solid quantities for experimental flexibility.
• Intended for research and analytical applications only.
• Provided with a safety data sheet and handling documentation.

Medchemexpress LLC 2-mercaptobenzothiazole | 149-30-4 | MFCD00005781 | 99.5% | 167.25 | C7H5NS2 | 100 G

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2-Mercaptobenzothiazole is a sulfur-containing benzothiazole used as a chemical reagent and analytical standard for research applications. It is reported to activate the aryl hydrocarbon receptor and to inhibit thyroid hormone synthesis and dopamine β-hydroxylase.

• CAS 149-30-4 for unambiguous identification.
• Molecular formula C7H5NS2 and molecular weight 167.25.
• Solid, white to yellow appearance suitable for storage and handling.
• High reported purity (~99.5%) with downloadable COA and SDS available.
• Available in multiple pack sizes, including 100 g, 500 g, and 1 kg.
• Commonly used as an analytical standard and research reagent in biochemical assays.