Description: 987 organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system / 987 organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system/(30) phosphorus compounds (9/02; 9/06) (224) p is pentavalent and contains the structure p-(o-c) or p-(o-z) where z indicates an atom other than h (9/09; 9/09a1) (233) alchohol moiety of ester contains at least three hydroxyl functions or derivatives thereof and wherein the oxygen atoms of the derivative can be attributed to the hydroxyl functions; e.g., phosphatides, lecithin, etc. (9/10)
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