sˈɛvəntˌiːn ˈælfəhaɪdɹˈɑːksɪpɹˌɛɡnənˌɑːloʊn ɪz ɐ pɹˈɛɡneɪn sˈiː twˈɛnti wˈʌn stˈɛɹɔɪd ðæt ɪz əbtˈeɪnd baɪ haɪdɹˈɑːksɪlˈeɪʃən ʌv pɹˈɛɡnənˌɑːloʊn æt ðə sˈiː sˈɛvəntˌiːn ˈælfə pəzˈɪʃən.
17α-Hydroxypregnenolone is a pregnane (C21) steroid that is obtained by hydroxylation of pregnenolone at the C17α position.