arsinic acids

https://doi.org/10.1351/goldbook.A00453
H2As(=O)OH and its As-@H02891@ derivatives, e.g. Me2As(=O)OH, dimethylarsinic acid.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1320 [Terms] [Paper]