Abstract: The present embodiment provides a compound represented by the formula (1): Q-CHR2??(1) (Q is a nitrogen-containing aliphatic group containing two or more tertiary nitrogens but no oxygen, and R is an aliphatic group containing a biodegradable group). From the compound in combination with other lipids such as a lipid capable of reducing aggregation, lipid particles can be formed. Further, the compound can be used for a pharmaceutical composition to deliver an activator into cells.

Abstract: A process for producing an oxygen absorbing agent includes treating an alloy with an aqueous solution of an acid or an alkali, the alloy including at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to elute and remove at least a part of the component; and subjecting the alloy obtained by removing at least a part of the component in the alloy to treatment with an aqueous solution of a salt of an inorganic acid or a salt of an organic acid that can form a salt with the transition metal as the component, to form a metal salt in at least a part of the surface of the alloy.

Abstract: An oxygen absorbing agent has excellent oxygen absorbing properties and can absorb oxygen in an atmosphere, even under a moisture-free or substantially moisture-free atmosphere. The oxygen absorbing agent includes an alloy obtained by subjecting an alloy (X) including (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon, to treatment with an alkali aqueous solution to elute and remove at least a part of the component (B) in the alloy (X), wherein the alloy (Y) has an X-ray diffraction profile satisfying a diffraction peak relationship.

Abstract: There is provided an oxygen absorbing agent that can have a capability of absorbing oxygen in an atmosphere even when the atmosphere is free or substantially free from moisture. The oxygen absorbing agent comprises a metal, the metal having been obtained by subjecting an alloy comprising (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to treatment with an acidic or alkaline aqueous solution to elute and remove at least a part of the component (B).

Abstract: A process for producing an oxygen absorbing agent includes treating an alloy with an aqueous solution of an acid or an alkali, the alloy including at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to elute and remove at least a part of the component; and subjecting the alloy obtained by removing at least a part of the component in the alloy to treatment with an aqueous solution of a salt of an inorganic acid or a salt of an organic acid that can form a salt with the transition metal as the component, to form a metal salt in at least a part of the surface of the alloy.

Abstract: An oxygen absorbing agent has excellent oxygen absorbing properties and can absorb oxygen in an atmosphere, even under a moisture-free or substantially moisture-free atmosphere. The oxygen absorbing agent includes an alloy obtained by subjecting an alloy (X) including (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon, to treatment with an alkali aqueous solution to elute and remove at least a part of the component (B) in the alloy (X), wherein the alloy (Y) has an X-ray diffraction profile satisfying a diffraction peak relationship.

Abstract: There is provided an oxygen absorbing agent that can have a capability of absorbing oxygen in an atmosphere even when the atmosphere is free or substantially free from moisture. The oxygen absorbing agent comprises a metal, the metal having been obtained by subjecting an alloy comprising (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to treatment with an acidic or alkaline aqueous solution to elute and remove at least a part of the component (B).