Correct spelling for the English word "socaloin" is [sˈə͡ʊkɐlˌɔ͡ɪn], [sˈəʊkɐlˌɔɪn], [s_ˈəʊ_k_ɐ_l_ˌɔɪ_n] (IPA phonetic alphabet).
An aloin, C15H16O7, obtained from Socotrine aloes.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.