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2013 MeSH

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Pregnenolone
MeSH HeadingPregnenolone
Tree NumberD04.808.745.745.725
Tree NumberD06.472.040.585.745
Tree NumberD06.472.334.851.687.500
Annotationdo not confuse with PREGNANOLONE
Scope NoteA 21-carbon steroid, derived from CHOLESTEROL and found in steroid hormone-producing tissues. Pregnenolone is the precursor to GONADAL STEROID HORMONES and the adrenal CORTICOSTEROIDS.
Entry Term5-Pregnen-3-beta-ol-20-one
Allowable QualifiersAA AD AE AG AI AN BI BL CF CH CL CS CT DF DU EC GE HI IM IP ME PD PH PK PO RE SD SE ST TO TU UR
CAS Type 1 NamePregn-5-en-20-one, 3-hydroxy-, (3beta)-
Registry Number145-13-1
Date of Entry19990101
Unique IDD011284


MeSH Tree Structures

 
Polycyclic Compounds [D04]
   Steroids [D04.808]
      Pregnanes [D04.808.745]
         Pregnenes [D04.808.745.745]
Cortisone [D04.808.745.745.183]
Dimethisterone [D04.808.745.745.279]
Ethisterone [D04.808.745.745.379]
Pregnenediones [D04.808.745.745.654]  +
Arrow pointing to current tree nodePregnenolone [D04.808.745.745.725]
17-alpha-Hydroxypregnenolone [D04.808.745.745.725.395]
Pregnenolone Carbonitrile [D04.808.745.745.725.703]
Spironolactone [D04.808.745.745.855]

 
Hormones, Hormone Substitutes, and Hormone Antagonists [D06]
   Hormones [D06.472]
      Adrenal Cortex Hormones [D06.472.040]
         Hydroxycorticosteroids [D06.472.040.585]
11-Hydroxycorticosteroids [D06.472.040.585.353]  +
17-Hydroxycorticosteroids [D06.472.040.585.478]  +
Desoxycorticosterone [D06.472.040.585.611]  +
Arrow pointing to current tree nodePregnenolone [D06.472.040.585.745]
17-alpha-Hydroxypregnenolone [D06.472.040.585.745.500]

 
Hormones, Hormone Substitutes, and Hormone Antagonists [D06]
   Hormones [D06.472]
      Gonadal Hormones [D06.472.334]
         Gonadal Steroid Hormones [D06.472.334.851]
            Progesterone Congeners [D06.472.334.851.687]
Arrow pointing to current tree nodePregnenolone [D06.472.334.851.687.500]
17-alpha-Hydroxypregnenolone [D06.472.334.851.687.500.500]
Progesterone [D06.472.334.851.687.750]  +

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