A polymeric form of methacrylic acid was described in 1880.
2.
Polymeric forms of the group IV elements are well known.
3.
GcvB enhances the ability of the bacterium to survive low pH by upregulating the levels of the alternate sigma factor RpoS . A polymeric form of GcvB has recently been identified.
4.
A variety of C17? and / or C3 ester prodrugs of estradiol, such as estradiol acetate, estradiol benzoate, estradiol cypionate, estradiol dipropionate, estradiol enanthate, estradiol undecylate, estradiol valerate, and polyestradiol phosphate ( an estradiol ester in polymeric form ), among many others, have been developed and introduced for medical use as estrogens.
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