2-thienylacetic acid, 2-Thiophenecarboxaldehyde,hydrazone, 2-thiophene acetic aci, 2-(Thiophen-2-yl)acetic acid; 2-Thiophencarbaldehyd-hydrazon; thien-2-yl acetic acid; 2-Thienylacetic acid; Thiophene-2-carboxaldehyde hydrazone; Thiophene-2-acetic Acid; thien-2-ylmethylene-hydrazine; thiophen-2-yl-acetic acid;, 2-Thiopheneacetic acid