2-Sulfobenzoic acid cyclic anhydride
2-Sulfobenzoic acid cyclic anhydride (CAS: 81-08-3), with the empirical formula C7H4O4S and a molecular weight of 184.17 g/mol, is a chemical compound supplied by Tech Serve Solutions. This substance is primarily recognised for its utility in specific staining procedures within biological and histological laboratories. Its chemical structure makes it a valuable reagent for researchers and technicians involved in cellular and tissue analysis.
- IUPAC
- 2,1-Benzoxathiol-3-one-1,1-dioxide
- Synonyms
- 2,1-Benzoxathiol-3-one-1,1-dioxide

Histology and Hematology Staining
This compound serves as a component in specialised staining techniques used in histology and hematology. It aids in the differentiation and visualisation of cellular structures and blood components.
Cell Biology Research
In cell biology, 2-Sulfobenzoic acid cyclic anhydride can be employed as a reagent in studies focusing on cellular components and processes. Its chemical properties are leveraged for specific analytical applications.
Dye Synthesis Intermediate
The compound's structure suggests potential use as an intermediate in the synthesis of more complex dyes and stains. This is relevant for the development of new analytical or diagnostic agents.
| Molecular weight | 184.17 |
|---|---|
| Empirical formula | C7H4O4S |
| Assay | 90% |
| Boiling point | 184-186 °C/18 mmHg(lit.) |
| Solubility | methanol: soluble50 mg/mL |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2-Sulfobenzoic acid cyclic anhydride used for?
+
2-Sulfobenzoic acid cyclic anhydride is primarily used in specialised staining procedures within cell biology, hematology, and histology laboratories. It can also serve as an intermediate in dye synthesis.
What are the CAS number and formula for 2-Sulfobenzoic acid cyclic anhydride?
+
The CAS number is 81-08-3, and the empirical formula is C7H4O4S.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 2-Sulfobenzoic acid cyclic anhydride with an assay of 90%. TSS does not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling precautions for 2-Sulfobenzoic acid cyclic anhydride?
+
Handling requires personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. It has a WGK Germany rating of 3.
Is 2-Sulfobenzoic acid cyclic anhydride a controlled substance?
+
The provided data does not indicate that 2-Sulfobenzoic acid cyclic anhydride is a controlled substance.
How can I request a sample or quote for 2-Sulfobenzoic acid cyclic anhydride?
+
Please contact the Tech Serve Solutions sales team via our website or direct contact details to request a sample or a quotation.
How is 2-Sulfobenzoic acid cyclic anhydride packed and shipped?
+
Products are carefully packed according to international shipping regulations and exported globally by Tech Serve Solutions.
▶ Related products

(−)-Curcumol
C15H24O2
Cell Biology
(±) Clopidogrel hydrogensulfate
Cell Biology

(±)-L-Alliin
C6H11NO3S
Cell Biology
(±)-2-Amino-4-phosphonobutyric acid
C4H10NO5P
Cell Biology
(±)-2-Methylarachidonoyl-2′-fluoroethylamide
C23H38NOF
Cell Biology
(±)-3,4-Methylenedioxy-N-ethylamphetamine hydrochloride
Cell Biology

(±)-3,4-Methylenedioxyamphetamine hydrochloride
Cell Biology

(±)-3,4-Methylenedioxymethamphetamine hydrochloride
Cell Biology
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis