2-Sulfobenzoic anhydride

Modify Date: 2026-07-03 12:32:45

2-Sulfobenzoic anhydride Structure
2-Sulfobenzoic anhydride structure
Common Name 2-Sulfobenzoic anhydride
CAS Number 81-08-3 Molecular Weight 184.169
Density 1.6±0.1 g/cm3 Boiling Point 314.7±0.0 °C at 760 mmHg
Molecular Formula C7H4O4S Melting Point 116-124 °C
MSDS USA Flash Point 140.6±19.3 °C

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 2-Sulfobenzoic anhydride
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.6±0.1 g/cm3
Boiling Point 314.7±0.0 °C at 760 mmHg
Melting Point 116-124 °C
Molecular Formula C7H4O4S
Molecular Weight 184.169
Flash Point 140.6±19.3 °C
Exact Mass 183.983032
PSA 68.82000
LogP 0.79
Vapour Pressure 0.0±0.6 mmHg at 25°C
Index of Refraction 1.629
InChIKey NCYNKWQXFADUOZ-UHFFFAOYSA-N
SMILES O=C1OS(=O)(=O)c2ccccc21

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes C:Corrosive;
Risk Phrases R20/21/22;R34
Safety Phrases S22-S24/25-S45-S36/37/39-S26
RIDADR NONH for all modes of transport
WGK Germany 3
HS Code 29163900

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

~64%

2-Sulfobenzoic anhydride Structure

2-Sulfobenzoic ...

CAS#:81-08-3

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Literature: Journal of Sulfur Chemistry, , vol. 31, # 1 p. 71 - 81

~%

2-Sulfobenzoic anhydride Structure

2-Sulfobenzoic ...

CAS#:81-08-3

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Literature: Recueil des Travaux Chimiques des Pays-Bas, , vol. 25, p. 53

~95%

2-Sulfobenzoic anhydride Structure

2-Sulfobenzoic ...

CAS#:81-08-3

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Literature: Synthetic Communications, , vol. 42, # 8 p. 1101 - 1107

~%

2-Sulfobenzoic anhydride Structure

2-Sulfobenzoic ...

CAS#:81-08-3

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Literature: Organic Process Research and Development, , vol. 8, # 2 p. 201 - 212

~%

2-Sulfobenzoic anhydride Structure

2-Sulfobenzoic ...

CAS#:81-08-3

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Literature: Journal of the Chemical Society, , p. 2042,2046

~%

2-Sulfobenzoic anhydride Structure

2-Sulfobenzoic ...

CAS#:81-08-3

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Literature: American Chemical Journal, , vol. 35, p. 502

~%

2-Sulfobenzoic anhydride Structure

2-Sulfobenzoic ...

CAS#:81-08-3

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Literature: Journal of the Chemical Society, , p. 2042,2046

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 29163900

 Articles4

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Modification of epsilon-amino group of lysine in proteins by acylation with pyromellitic dianhydride and o-sulphobenzoic anhydride.

FEBS Lett. 120 , 275, (1980)

De novo sequencing of two new cyclic theta-defensins from baboon (Papio hamadryas) leukocytes by matrix-assisted laser desorption/ionization mass spectrometry.

Rapid Commun. Mass Spectrom. 24(5) , 599-604, (2010)

Two cyclic theta-defensin peptides were isolated from leukocytes of the hamadryas baboon, Papio hamadryas, and purified to homogeneity by gel electrophoresis and reversed-phase high-performance liquid...

Derivatization of fatty alcohol ethoxylate non-ionic surfactants using 2-sulfobenzoic anhydride for characterization by liquid chromatography/mass spectrometry.

Rapid Commun. Mass Spectrom. 24(1) , 120-8, (2010)

A derivatization procedure has been developed for the improved characterization of fatty alcohol ethoxylate non-ionic surfactants by liquid chromatography/mass spectrometry. The end hydroxyl group of ...

 2-Sulfobenzoic anhydrideBioassay

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This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: HIV Cellular Data
Source: NIAID
Target: N/A
External Id: HIV Cellular Data
Total 1, Current Page 1 of 1
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 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

2-Sulfobenzoic anhydride
3H-2,1-Benzoxathiol-3-one, 1,1-dioxide (9CI)
MFCD00005879
1,1-dioxo-2,1λ<sup>6</sup>-benzoxathiol-3-one
3H-2,1-Benzoxathiol-3-one, 1,1-dioxide
EINECS 201-322-6
3H-2,1-Benzoxathiol-3-one 1,1-dioxide

 2-Sulfobenzoic anhydride | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the polar surface area (PSA) of 2-Sulfobenzoic anhydride?
A: Polar surface area (PSA) of 2-Sulfobenzoic anhydride is 68.82000.
Q: What is the English name of 2-Sulfobenzoic anhydride?
A: The English name of 2-Sulfobenzoic anhydride is 2-Sulfobenzoic anhydride.
Q: What is the CAS number of 2-Sulfobenzoic anhydride?
A: CAS number of 2-Sulfobenzoic anhydride is 81-08-3.
Q: What are the downstream products of 2-Sulfobenzoic anhydride?
A: Related downstream products(CAS) of 2-Sulfobenzoic anhydride: 32638-88-3;26638-43-7;2800-80-8;76-60-8;861304-71-4;76-61-9;4430-20-0;143-74-8;2303-01-7;125-31-5.
Q: What is the SMILES notation of 2-Sulfobenzoic anhydride?
A: SMILES notation of 2-Sulfobenzoic anhydride is O=C1OS(=O)(=O)c2ccccc21.
Q: What is the InChIKey of 2-Sulfobenzoic anhydride?
A: InChIKey of 2-Sulfobenzoic anhydride is NCYNKWQXFADUOZ-UHFFFAOYSA-N.
Q: What is the molecular formula of 2-Sulfobenzoic anhydride?
A: Molecular formula of 2-Sulfobenzoic anhydride is C7H4O4S.
Q: What is the molecular weight of 2-Sulfobenzoic anhydride?
A: Molecular weight of 2-Sulfobenzoic anhydride is 184.169.
Q: What are the upstream materials of 2-Sulfobenzoic anhydride?
A: Related upstream materials(CAS) of 2-Sulfobenzoic anhydride: 6939-89-5;632-25-7;81-07-2;128-44-9;34684-21-4;295785-44-3;71-43-2.
Q: What is the safety information for 2-Sulfobenzoic anhydride?
A: Safety information for 2-Sulfobenzoic anhydride: S22-S24/25-S45-S36/37/39-S26.

 2-Sulfobenzoic anhydridefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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