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  • Product Name: Gestrinone
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  • Purity: 98.0%
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16320-04-0

16320-04-0 structure
16320-04-0 structure
  • Name: Gestrinone
  • Chemical Name: Gestrinone
  • CAS Number: 16320-04-0
  • Molecular Formula: C21H24O2
  • Molecular Weight: 308.414
  • Catalog: API Hormone and endocrine-regulating drugs Birth control pills
  • Create Date: 2018-05-27 08:00:00
  • Modify Date: 2024-01-14 15:49:59
  • Gestrinone (R2323) is a synthetic steroid hormone used to treat endometriosis. It inhibits leiomyoma cells with an IC50 of 43.67 μM.

Name Gestrinone
Synonyms D-GESTRINONE
Dimetriose
TridoMose
13b-Ethyl-17a-ethynyl-D4,9,11-gonatriene-17b-ol-3-one
(17a)-13-Ethyl-17-hydroxy-18,19-dinorpregna-4,9,11-trien-20-yn-3-one
13b-Ethyl-17a-ethynyl-17b-hydroxy-4,9,11-gonatrien-3-one
Dimetrose
MFCD00865561
gestrigone
(17α)-13-Ethyl-17-hydroxy-18,19-dinorpregna-4,9,11-trien-20-yn-3-one
18,19-Dinorpregna-4,9,11-trien-20-yn-3-one, 13-ethyl-17-hydroxy-, (17α)-
Gestrinone
(8S,13S,14S,17R)-13-Ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-3-one
13-ETHYL-17α-ETHYNYL-17β-HYDROXY-4,9,11-GONATRIENE-3-ONE
NeMestran
Description Gestrinone (R2323) is a synthetic steroid hormone used to treat endometriosis. It inhibits leiomyoma cells with an IC50 of 43.67 μM.
Related Catalog
Target

IC50: 43.67 μM (leiomyoma cells)[2]

In Vitro Gestrinone binds to endometrial receptors for estrogen, progesterone and androgen, occupies all specific binding sites of steroids in the steroid target cells despite the presence of endogenous steroids[1]. Gestrinone exhibits stronger inhibitory effects on the growth of leiomyoma cells at 60 h than that at 20 and 40 h. Leiomyoma cells appears less dense, the cytoplasm is atrophic, the intercellular connections dwindled and nuclear aggregations are observed with more than 10 μM gestrinone treatment. Gestrinone treatment reduces the relative mRNA levels of estrogen α in a concentration dependent manner at concentrations of 0.1-3.0 μM[2].
In Vivo The estrogen-sensitive endpoints, vaginal keratinization and uterine progesterone receptor concentration, are enhanced by treatment with a combination of flutamide and either danazol or gestrinone. These data indicate that danazol and gestrinone have estrogenic activity that is masked by the androgenic component of these drugs[3]. The mean hormone binding globulin treated with gestrinone fell from 56.4 nM to 28.1 nM after one week’s treatment and to 7.1 nM after 4 weeks respectively[4].
Cell Assay Gestrinone is dissolved in DMSO and diluted in cell culture media. The final concentration of DMSO in the culture media is 0.5%. The cells are cultured in 96-well plates and treated with DMSO or graded concentrations of gestrinone (0.1, 0.5, 1.0, 5.0, 10, 50 or 100 μM) for 20, 40 and 60 h. The absorbance (OD) at 450 nm is read to determine the cell viability in each well[2].
References

[1]. Tamaya T, et al. Gestrinone (R2323) binding to steroid receptors in human uterine endometrial cytosol. Acta Obstet Gynecol Scand. 1986;65(5):439-41.

[2]. Zhu Y, et al. Gestrinone inhibits growth of human uterine leiomyoma may relate to activity regulation of ERα, Src and P38 MAPK. Biomed Pharmacother. 2012 Dec;66(8):569-77.

[3]. Snyder BW, et al. Studies on the mechanism of action of danazol and gestrinone (R2323) in the rat: evidence for a masked estrogen component. Fertil Steril. 1989 Apr;51(4):705-10.

[4]. Dowsett M, et al. A comparison of the effects of danazol and gestrinone on testosterone binding to sex hormone binding globulin in vitro and in vivo. Clin Endocrinol (Oxf). 1986 May;24(5):555-63.

Density 1.2±0.1 g/cm3
Boiling Point 507.6±50.0 °C at 760 mmHg
Melting Point 154ºC
Molecular Formula C21H24O2
Molecular Weight 308.414
Flash Point 214.9±22.7 °C
Exact Mass 308.177643
PSA 37.30000
LogP 3.27
Vapour Pressure 0.0±3.0 mmHg at 25°C
Index of Refraction 1.607
Storage condition -20°C Freezer

CHEMICAL IDENTIFICATION

RTECS NUMBER :
JF7964000
CHEMICAL NAME :
18,19-Dinor-17-alpha-pregna-4,9,11-trien-20-yn-3-one, 13-ethyl-17-hydroxy-
CAS REGISTRY NUMBER :
16320-04-0
LAST UPDATED :
199612
DATA ITEMS CITED :
13
MOLECULAR FORMULA :
C21-H24-O2
MOLECULAR WEIGHT :
308.45

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Behavioral - altered sleep time (including change in righting reflex) Skin and Appendages - dermatitis, other (after systemic exposure) Nutritional and Gross Metabolic - other changes
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 16,701,1988
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - visual field changes Behavioral - altered sleep time (including change in righting reflex) Nutritional and Gross Metabolic - other changes
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 16,701,1988
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Behavioral - altered sleep time (including change in righting reflex) Behavioral - convulsions or effect on seizure threshold Gastrointestinal - other changes
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 16,701,1988 ** REPRODUCTIVE DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
400 ug/kg
SEX/DURATION :
female 8 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Maternal Effects - menstrual cycle changes or disorders Reproductive - Fertility - female fertility index (e.g. # females pregnant per # sperm positive females; # females pregnant per # females mated)
REFERENCE :
CCPTAY Contraception. (Geron-X, Inc., POB 1108, Los Altos, CA 94022) V.1- 1970- Volume(issue)/page/year: 14,275,1976
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
1200 ug/kg
SEX/DURATION :
female 12 week(s) pre-mating
TOXIC EFFECTS :
Reproductive - Maternal Effects - menstrual cycle changes or disorders
REFERENCE :
FESTAS Fertility and Sterility. (American Fertility Soc., 608 13th Ave. S, Birmingham, AL 35282) V.1- 1950- Volume(issue)/page/year: 31,278,1979
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Implant
DOSE :
1800 ug/kg
SEX/DURATION :
female 48 week(s) pre-mating
TOXIC EFFECTS :
Reproductive - Maternal Effects - menstrual cycle changes or disorders Reproductive - Fertility - female fertility index (e.g. # females pregnant per # sperm positive females; # females pregnant per # females mated)
REFERENCE :
CCPTAY Contraception. (Geron-X, Inc., POB 1108, Los Altos, CA 94022) V.1- 1970- Volume(issue)/page/year: 11,625,1975
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intravaginal
DOSE :
185 ug/kg
SEX/DURATION :
female 28 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - other measures of fertility
REFERENCE :
CCPTAY Contraception. (Geron-X, Inc., POB 1108, Los Altos, CA 94022) V.1- 1970- Volume(issue)/page/year: 14,671,1976
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intravaginal
DOSE :
2600 ug/kg
SEX/DURATION :
female 26 week(s) pre-mating
TOXIC EFFECTS :
Reproductive - Maternal Effects - menstrual cycle changes or disorders
REFERENCE :
FESTAS Fertility and Sterility. (American Fertility Soc., 608 13th Ave. S, Birmingham, AL 35282) V.1- 1950- Volume(issue)/page/year: 49,418,1988
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
50 mg/kg
SEX/DURATION :
female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - pre-implantation mortality (e.g. reduction in number of implants per female; total number of implants per corpora lutea) Reproductive - Effects on Embryo or Fetus - fetal death
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 16,713,1988
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
500 ug/kg
SEX/DURATION :
female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 16,713,1988
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
20 mg/kg
SEX/DURATION :
female 15-18 day(s) after conception
TOXIC EFFECTS :
Reproductive - Maternal Effects - parturition
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 16,737,1988
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
1200 mg/kg
SEX/DURATION :
female 15-18 day(s) after conception lactating female 20 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 16,737,1988
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Implant
DOSE :
2486 ug/kg
SEX/DURATION :
female 1 year(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - other measures of fertility
REFERENCE :
CCPTAY Contraception. (Geron-X, Inc., POB 1108, Los Altos, CA 94022) V.1- 1970- Volume(issue)/page/year: 15,335,1977
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