prov:value
| - and about molar equivalents of a compound of formula wherein X* is a group ???N???C???O or carboxy or a suitable derivative thereof, for example a group ???C(O)OH, ???C(O)OR20 or ???C(O)???OHal wherein R20 is, for example, C1-C4-alkyl, phenyl or benzyl and Hal is halogen, in particular bromine or chlorine, and A, R, R11 X, X1, X2, (alk), (oligomer), n, m1 and t are each as defined above.
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