*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : JF7965000
CHEMICAL NAME           : 18,19-Dinor-17-alpha-pregna-4,9,11-trien-20-yn-3-one,
                          13-ethyl-17-hydroxy-, and testosterone
LAST UPDATED            : 198910
DATA ITEMS CITED        : 1
MOLECULAR FORMULA       : C21-H24-O2.C19-H28-O2
MOLECULAR WEIGHT        : 596.92
COMPOUND DESCRIPTOR     : Reproductive Effector
                          Human
                          Hormone
SYNONYMS/TRADE NAMES :
   * R2323 and testosterone
   * Testosterone and R2323
 
                       *** HEALTH HAZARD DATA ***
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Multiple routes
SPECIES OBSERVED        : Human - man
DOSE                    : 20 mg/kg
SEX/DURATION            : male 24 week(s) pre-mating
TOXIC EFFECTS :
   Reproductive - Paternal Effects - spermatogenesis (incl. genetic material,
   sperm morphology, motility, and count)
REFERENCE :
   CCPTAY Contraception.  (Geron-X, Inc., POB 1108, Los Altos, CA 94022)  V.1-
   1970-  Volume(issue)/page/year: 8,207,1973
 
                            *** END OF RECORD ***