ketals

https://doi.org/10.1351/goldbook.K03376
@A00062@ derived from @K03386@ by replacement of the oxo group by two hydrocarbyloxy groups R2C(OR)2 (RH). This term, once abandoned, has been reinstated as a subclass of @A00062@.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1345 [Terms] [Paper]