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Ulipristal acetate (also known as CDB-2914) is a potent and selective SPRM (selective progesterone receptor modulator) for emergency contraception after an unprotected intercourse or contraceptive failure. Ulipristal acetate has partial agonistic as well as antagonistic effects on the progesterone receptor. It also binds to the glucocorticoid receptor, but has no relevant affinity to the estrogen, androgen and mineralocorticoid receptors. Ulipristal acetate dose dependently suppressed progesterone-induced acrosome reaction and hyperactivation in human spermatozoa.
| ln Vitro |
In leiomyoma cells, ulipristal acetate (0.1–5 μM; 96 h) promotes autophagy. Ulipristal produced alterations in the expression of the autophagy markers p62/SQSTM1 and LC3. In leiomyoma cells, ulipristal upregulates the Atg7 protein [2]. In cultured uterine fibroids and leiomyoma cells, ulipristalacetate inhibits the regulation of activin A on fibronectin and vascular endothelial growth factor A (VEGF-A) mRNA expression [4].
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| ln Vivo |
In vivo, ulipristal and CDB-4124 exhibit strong anti-pregnancy properties [5]. In all therapy groups, ulipristal acetate decreased the incidence of adenocarcinoma and breast fibroadenoma. Rats exposed to the highest dose of ulipristal acetate [AUC (0-24h)] were exposed to 67 times the therapeutic dose of 10 mg/day in humans. When ulipristal acetate was administered in doses up to 313 times the therapeutic exposure, mice showed no growth in tumors of any kind. The liver, pituitary, thyroid/parathyroid, and epididymis weight alterations, as well as the smallest entire lobule in male and female mice given a dose of 130 mg/kg/day, were the only findings linked to ulipristal acetate in mice. enlargement of hepatocytes [6]. When compared to the control, ulipristal acetate (1 mg/kg and 5 mg/kg) increased in a dose-dependent way the frequency of pathologist assessment of endometrial thickening. Both secretory differentiation and the frequency of subnuclear and supranuclear vacuole formation somewhat decrease with an increase in ulipristal acetate dosage [7].
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| References |
[1]. Jadav SP, et al. Ulipristal acetate, a progesterone receptor modulator for emergency contraception. J Pharmacol Pharmacother. 2012 Apr;3(2):109-11.
[2]. Del Bello B, et al. Autophagy up-regulation by ulipristal acetate as a novel target mechanism in the treatment of uterine leiomyoma: an in vitro study. Fertil Steril. 2019 Dec;112(6):1150-1159. [3]. Hild SA, et al. CDB-2914: anti-progestational/anti-glucocorticoid profile and post-coital anti-fertility activity in rats and rabbits. Hum Reprod. 2000 Apr;15(4):822-9. [4]. Ciarmela P, et al. Ulipristal acetate modulates the expression and functions of activin a in leiomyoma cells. Reprod Sci. 2014 Sep;21(9):1120-5. [5]. Attardi BJ, et al. In vitro antiprogestational/antiglucocorticoid activity and progestin and glucocorticoid receptor binding of the putative metabolites and synthetic derivatives of CDB-2914, CDB-4124, and mifepristone. J Steroid Biochem Mol Biol. [6]. Pohl O, et al. Carcinogenicity and chronic rodent toxicity of the selective progesterone receptor modulator ulipristal acetate. Curr Drug Saf. 2013 Apr;8(2):77-97. [7]. Pohl O, et al. A 39-week oral toxicity study of ulipristal acetate in cynomolgus monkeys. Regul Toxicol Pharmacol. 2013 Jun;66(1):6-12 |
| Additional Infomation |
Ulipristal acetate is a 20-oxo steroid obtained by acetylation of the 17-hydroxy group of (11beta,17alpha)-17-acetyl-11-[4-(dimethylamino)phenyl]-3-oxoestra-4,9-dien-17-ol (ulipristal). A selective progesterone receptor modulator, which is employed as an emergency contraceptive. It has a role as a contraceptive drug, a progestin and a progesterone receptor modulator. It is a 3-oxo-Delta(4) steroid, a steroid ester, an acetate ester, a 20-oxo steroid and a tertiary amino compound. It is functionally related to an estradiol.
Ulipristal Acetate is an orally bioavailable, acetate salt of ulipristal, a selective progesterone receptor modulator with anti-progesterone activity. Ulipristal binds to the progesterone receptor (PR), thereby inhibiting PR-mediated gene expression, and interfering with progesterone activity in the reproductive system. As a result, this agent may suppress the growth of uterine leiomyomatosis. Furthermore, by inhibiting or delaying ovulation and effecting endometrial tissue, ulipristal can be used as an emergency contraception See also: Ulipristal (has active moiety). Drug Indication Emergency contraception within 120 hours (five days) of unprotected sexual intercourse or contraceptive failure. Ulipristal acetate is indicated for one treatment course of pre-operative treatment of moderate to severe symptoms of uterine fibroids in adult women of reproductive age. Ulipristal acetate is indicated for intermittent treatment of moderate to severe symptoms of uterine fibroids in adult women of reproductive age who are not eligible for surgery. Ulipristal acetate is indicated for pre-operative treatment of moderate to severe symptoms of uterine fibroids in adult women of reproductive age. Ulipristal acetate is indicated for intermittent treatment of moderate to severe symptoms of uterine fibroids in adult women of reproductive age. Contraception Leiomyoma of uterus |
| Molecular Formula |
C30H37NO4
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|---|---|
| Molecular Weight |
475.6191
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| Exact Mass |
475.272
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| CAS # |
126784-99-4
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| Related CAS # |
Ulipristal;159811-51-5;Ulipristal acetate-d6;1621894-64-1
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| PubChem CID |
130904
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| Appearance |
Typically exists as solid at room temperature
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| Density |
1.2±0.1 g/cm3
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| Boiling Point |
640.1±55.0 °C at 760 mmHg
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| Melting Point |
183-185ºC
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| Flash Point |
340.9±31.5 °C
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| Vapour Pressure |
0.0±1.9 mmHg at 25°C
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| Index of Refraction |
1.594
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| LogP |
4.48
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| Hydrogen Bond Donor Count |
0
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| Hydrogen Bond Acceptor Count |
5
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| Rotatable Bond Count |
5
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| Heavy Atom Count |
35
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| Complexity |
984
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| Defined Atom Stereocenter Count |
5
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| SMILES |
O(C(C([H])([H])[H])=O)[C@]1(C(C([H])([H])[H])=O)C([H])([H])C([H])([H])[C@@]2([H])[C@]3([H])C([H])([H])C([H])([H])C4=C([H])C(C([H])([H])C([H])([H])C4=C3[C@@]([H])(C3C([H])=C([H])C(=C([H])C=3[H])N(C([H])([H])[H])C([H])([H])[H])C([H])([H])[C@@]21C([H])([H])[H])=O
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| InChi Key |
OOLLAFOLCSJHRE-ZHAKMVSLSA-N
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| InChi Code |
InChI=1S/C30H37NO4/c1-18(32)30(35-19(2)33)15-14-27-25-12-8-21-16-23(34)11-13-24(21)28(25)26(17-29(27,30)3)20-6-9-22(10-7-20)31(4)5/h6-7,9-10,16,25-27H,8,11-15,17H2,1-5H3/t25-,26+,27-,29-,30-/m0/s1
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| Chemical Name |
[(8S,11R,13S,14S,17R)-17-acetyl-11-[4-(dimethylamino)phenyl]-13-methyl-3-oxo-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-17-yl] acetate
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| HS Tariff Code |
2934.99.9001
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
DMSO : ~33.33 mg/mL (~70.08 mM)
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| Solubility (In Vivo) |
Solubility in Formulation 1: ≥ 2.5 mg/mL (5.26 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (5.26 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.1025 mL | 10.5126 mL | 21.0252 mL | |
| 5 mM | 0.4205 mL | 2.1025 mL | 4.2050 mL | |
| 10 mM | 0.2103 mL | 1.0513 mL | 2.1025 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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