Chitosan is a primary derivative of chitin.
Unlike the immediate derivative cells of primary meristems, derivatives of ray cells remain for a long time close to their site of origin, do not divide, and live for at least 4 5 years.
Can hormone resistance and dominant negative inhibition in selected target tissues be modelled in mutation-containing, patient-derived cells (either primary or derivatives of inducible pluripotent stem cells) studied ex vivo ?
Other empirical formulae were assigned to cinnamic acid-like structures (CI1 3) by similarity with the CH backbone, although the presence of nitrogen suggested the presence of a primary amide derivative (Table 2).
Co-chromatography with an authentic reference standard suggests that this peak represents an N-desmethylated compound of F-florbetaben, which is the primary amine derivative of F-florbetaben.
Our initial 1991 study of vasodilatory activity on the part of five structurally diverse diazeniumdiolates included the primary amine derivative IPA/NO (13), but this compound was both relatively unstable and much less potent as an NO generator and vasodilator than its secondary amine analogues.
A Community solution, however, will be neither simple nor easy, mainly for two reasons: First, whatever the measures proposed, they will have to impinge upon the difficult area of the free movement of goods and services, as established by primary and derivative law and as safeguarded by the decisions of the European Court.
Primary responsibility for derivatives tied to securities, including credit-default swaps, should go to the Securities and Exchange Commission, its chairwoman, Mary L. Schapiro, told a Senate subcommittee.
In view of the primary SAR, bisarylaniline derivatives (13o, 13p, 13r and 13s) showed obvious improvements on HER2 inhibition, which indicated their being potential EGFR/HER2 dual kinase inhibitors.
