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86130

Sigma-Aldrich

2-Sulfobenzoic acid cyclic anhydride

technical, ≥95.0% (T)

Synonym(s):

2,1-Benzoxathiol-3-one-1,1-dioxide

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About This Item

Empirical Formula (Hill Notation):
C7H4O4S
CAS Number:
Molecular Weight:
184.17
Beilstein:
139893
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:

grade

technical

Assay

≥95.0% (T)

bp

184-186 °C/18 mmHg (lit.)

mp

116-124 °C

SMILES string

O=C1OS(C2=CC=CC=C21)(=O)=O

InChI

1S/C7H4O4S/c8-7-5-3-1-2-4-6(5)12(9,10)11-7/h1-4H

InChI key

NCYNKWQXFADUOZ-UHFFFAOYSA-N

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Other Notes

Modifies the ε-amino function of lysyl residues in proteins by acylation

replaced by

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Modification of epsilon-amino group of lysine in proteins by acylation with pyromellitic dianhydride and o-sulphobenzoic anhydride.
A Bagree et al.
FEBS letters, 120(2), 275-277 (1980-11-03)

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