The Progesterone, with the CAS registry number 57-83-0,is also known as Progestin; Lutren; Lutein; Flavolutan; Corporin; Luteal hormone; 4-Pregnene-3,20-dione. It belongs to the product categories of Intracellular receptor;Steroid and Hormone.Its EINECS number is 200-350-6. This chemical's molecular formula is C₂₁H₃₀O₂ and molecular weight is 314.47. What's more,Its systematic name is Progesterone.It is a crystalline powder which is the major progestational steroid that is secreted primarily by the corpus luteum and the placenta. Progesterone acts on the uterus, the mammary glands and the brain. It is required in embryo implantation; pregnancy maintenance, and the development of mammary tissue for MILK production. Progesterone, converted from pregnenolone, also serves as an intermediate in the biosynthesis of gonadal steroid hormones and adrenal corticosteroids.

Physical properties about Progesterone are:
(1)ACD/LogP:  3.827; (2)# of Rule of 5 Violations:  0; (3)ACD/LogD (pH 5.5):  3.83; (4)ACD/LogD (pH 7.4):  3.83; (5)ACD/BCF (pH 5.5):  476.94; (6)ACD/BCF (pH 7.4):  476.94; (7)ACD/KOC (pH 5.5):  2876.39; (8)ACD/KOC (pH 7.4):  2876.39; (9)#H bond acceptors:  2; (10)#H bond donors:  0; (11)#Freely Rotating Bonds:  1; (12)Index of Refraction:  1.542; (13)Molar Refractivity:  90.955 cm³; (14)Molar Volume:  288.952 cm³; (15)Surface Tension:  41.1710014343262 dyne/cm; (16)Density:  1.088 g/cm³; (17)Flash Point:  166.683 °C; (18)Enthalpy of Vaporization:  70.544 kJ/mol; (19)Boiling Point:  447.151 °C at 760 mmHg; (20)Vapour Pressure:  0 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES:O=C4\C=C2/[C@]([C@H]1CC[C@@]3([C@@H](C(=O)C)CC[C@H]3[C@@H]1CC2)C)(C)CC4;
(2)Std. InChI:InChI=1S/C21H30O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h12,16-19H,4-11H2,1-3H3/t16-,17+,18-,19-,20-,21+/m0/s1;
(3)Std. InChIKey:RJKFOVLPORLFTN-LEKSSAKUSA-N.

Safety Information of Progesterone:
The Progesterone is limited evidence of a carcinogenic effect ,And it may cause cancer .In case of accident or if you feel unwell, seek medical advice immediately (show label where possible). When you use it, wear suitable protective clothing and gloves .Avoid exposure - obtain special instruction before use .

The toxicity data of Progesterone are as follows: