You know what it looks like… but what is it called?
TAKE THE QUIZ“phosphinic”
We have one entry that includes the term phosphinic.
phosphinic acid
noun: any of a series of monobasic organic acids RR′PO(OH) [as diphenyl-phosphinic acid (C6H5)2PO(OH)] obtainable from disubstituted phosphines by oxidation compare phosphonic acid
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Merriam-Webster unabridged