| 词条 | Pregnane |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 464213607 | ImageFile=Pregnane.svg | ImageSize= | ImageAlt=Skeletal formula of pregnane | ImageFile1=Pregnane 3D ball.png | ImageAlt1=Ball-and-stick model of the pregnane molecule | IUPACName=(8S,9S,10S,13R,14S,17S)-17-ethyl- | OtherNames= |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 5256760 | InChI = 1/C21H36/c1-4-15-9-11-18-17-10-8-16-7-5-6-13-20(16,2)19(17)12-14-21(15,18)3/h15-19H,4-14H2,1-3H3/t15-,16?,17-,18-,19-,20-,21+/m0/s1 | InChIKey = JWMFYGXQPXQEEM-WZBAXQLOBZ | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/C21H36/c1-4-15-9-11-18-17-10-8-16-7-5-6-13-20(16,2)19(17)12-14-21(15,18)3/h15-19H,4-14H2,1-3H3/t15-,16?,17-,18-,19-,20-,21+/m0/s1 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = JWMFYGXQPXQEEM-WZBAXQLOSA-N | CASNo_Ref = {{cascite|changed|??}} | CASNo=24909-91-9 | PubChem=6857422 | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = 8386 | SMILES = C41CCCC[C@@]1([C@@H]3[C@H]([C@@H]2CC[C@@H]([C@@]2(C)CC3)CC)CC4)C }} |Section2={{Chembox Properties | Formula=C21H36 | MolarMass=288.511 g/mol | Appearance= | Density=0.926 g/ml | MeltingPt= | BoilingPt= | Solubility= |Section3={{Chembox Hazards | MainHazards= | FlashPt= | AutoignitionPt = }} Pregnane, also known as 17β-ethylandrostane or as 10β,13β-dimethyl-17β-ethylgonane, is a C21 steroid and, indirectly, a parent of progesterone. It is a parent hydrocarbon for two series of steroids stemming from 5α-pregnane (originally allopregnane) and 5β-pregnane (17β-ethyletiocholane). It has a gonane core. 5β-Pregnane is the parent of pregnanediones, pregnanolones, and pregnanediols, and is found largely in urine as a metabolic product of 5β-pregnane compounds. PregnanesPregnanes are steroid derivatives with carbons present at positions 1 through 21. Most biologically significant pregnane derivatives fall into one of two groups: pregnenes and pregnadienes. Another class is pregnatrienes. Pregnenes{{main|Pregnene}}Pregnenes have a double bond. Examples include:
Pregnadienes{{main|Pregnadiene}}Pregnadienes have two double bonds. Examples include:
See also
ReferencesExternal links
2 : Endocrinology|Pregnanes |
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