Which anticoagulant belongs to the subclass of heparins?

Enoxaparin is classified as a low molecular weight heparin (LMWH) and is part of the heparin subclass of anticoagulants. As a heparin, it functions to inhibit certain clotting factors, primarily factor Xa and, to a lesser extent, factor IIa (thrombin). This mechanism helps to prevent the formation of blood clots, making it particularly useful in the treatment and prevention of thromboembolic disorders.

In contrast, warfarin is a vitamin K antagonist, acting through a different mechanism by inhibiting vitamin K-dependent clotting factors. Ticagrelor and aspirin are antiplatelet agents, which work to prevent platelet aggregation rather than directly affecting the coagulation cascade like heparins do. Hence, enoxaparin is correctly identified as belonging to the subclass of heparins due to its origin, composition, and specific action in the coagulation process.