equilenin and its Impurities
Equilenin is used as one of the components in conjugated estrogens. Equilenin, also known as 6,8-didehydroestrone.. Reference standards of Equilenin API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below
 
	
			                                   
																				(13S,17R)-3-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl benzoate
(13S,17R)-3-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl benzoate
- Catalogue No.:PAI 05 011001 
- CAS : - NA
- Molecular Formula : C25H26O3 
- Molecular Weight : 374.48 
 
	
			                                   
																				(13S,17R)-13-Methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diyl dibenzoate
(13S,17R)-13-Methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diyl dibenzoate
- Catalogue No.:PAI 05 011002 
- CAS : - NA
- Molecular Formula : C32H30O4 
- Molecular Weight : 478.59 
 
	
			                                   
																				(13S,17R)-3-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 1,1,2,2,3,3,3-heptafluoropropane-1-sulfonate
(13S,17R)-3-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 1,1,2,2,3,3,3-heptafluoropropane-1-sulfonate
- Catalogue No.:PAI 05 011003 
- CAS : - NA
- Molecular Formula : C21H21F7O4S 
- Molecular Weight : 502.44 
 
	
			                                   
																				(13S,17R)-13-Methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diyl bis(1,1,2,2,3,3,3-heptafluoropropane-1-sulfonate)
(13S,17R)-13-Methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diyl bis(1,1,2,2,3,3,3-heptafluoropropane-1-sulfonate)
- Catalogue No.:PAI 05 011004 
- CAS : - NA
- Molecular Formula : C24H20F14O6S2 
- Molecular Weight : 734.52 
 
	
			                                   
																				(13S,17S)-17-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3-yl benzoate
(13S,17S)-17-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3-yl benzoate
- Catalogue No.:PAI 05 011005 
- CAS : - NA
- Molecular Formula : C25H26O3 
- Molecular Weight : 374.48 
 
	
			                                   
																				(13S,17R)-3-(Benzoyloxy)-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(13S,17R)-3-(Benzoyloxy)-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011006 
- CAS : - NA
- Molecular Formula : C32H29NO6 
- Molecular Weight : 523.59 
 
	
			                                   
																				(17R)-3-(Benzoyloxy)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(17R)-3-(Benzoyloxy)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011008 
- CAS : - NA
- Molecular Formula : C31H29NO6 
- Molecular Weight : 511.57 
 
	
			                                   
																				(8R,13S,14S,17R)-3-(Benzoyloxy)-13-methyl-6-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(8R,13S,14S,17R)-3-(Benzoyloxy)-13-methyl-6-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011009 
- CAS : - NA
- Molecular Formula : C32H29NO7 
- Molecular Weight : 539.58 
 
	
			                                   
																				(7S,8R,13S,14S,17R)-3-(Benzoyloxy)-7-bromo-13-methyl-6-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(7S,8R,13S,14S,17R)-3-(Benzoyloxy)-7-bromo-13-methyl-6-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011010 
- CAS : - NA
- Molecular Formula : C32H28BrNO7 
- Molecular Weight : 618.48 
 
	
			                                   
																				(13S,14S,17R)-3-(Benzoyloxy)-13-methyl-6-oxo-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(13S,14S,17R)-3-(Benzoyloxy)-13-methyl-6-oxo-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011011 
- CAS : - NA
- Molecular Formula : C32H27NO7 
- Molecular Weight : 537.57 
 
	
			                                   
																				(8R,9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-ol
(8R,9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-ol
- Catalogue No.:PAI 05 011012 
- CAS : - 756844-26-5
- Molecular Formula : C20H28O3 
- Molecular Weight : 316.44 
 
	
			                                   
																				(8R,9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-8,9,12,13,14,15,16,17-octahydro-11H-cyclopenta[a]phenanthrene
(8R,9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-8,9,12,13,14,15,16,17-octahydro-11H-cyclopenta[a]phenanthrene
- Catalogue No.:PAI 05 011013 
- CAS : - NA
- Molecular Formula : C20H26O2 
- Molecular Weight : 298.43 
 
	
			                                   
																				(8R,13S,14S,17S)-7-Bromo-3,6,17-trimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene
(8R,13S,14S,17S)-7-Bromo-3,6,17-trimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene
- Catalogue No.:PAI 05 011014 
- CAS : - NA
- Molecular Formula : C21H29BrO3 
- Molecular Weight : 409.36 
 
	
			                                   
																				(8R,9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-one
(8R,9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-one
- Catalogue No.:PAI 05 011015 
- CAS : - 238423-12-6
- Molecular Formula : C20H26O3 
- Molecular Weight : 314.43 
 
	
			                                   
																				(7S,8R,9S,13S,14S,17S)-7-Bromo-3,17-dimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-one
(7S,8R,9S,13S,14S,17S)-7-Bromo-3,17-dimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-one
- Catalogue No.:PAI 05 011016 
- CAS : - 756844-29-8
- Molecular Formula : C20H25BrO3 
- Molecular Weight : 393.32 
 
	
			                                   
																				(9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-6-one
(9S,13S,14S,17S)-3,17-Dimethoxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-6-one
- Catalogue No.:PAI 05 011017 
- CAS : - NA
- Molecular Formula : C20H24O3 
- Molecular Weight : 312.41 
 
	
			                                   
																				(8R,9S,13S,14S,17R)-3-(Benzoyloxy)-6-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(8R,9S,13S,14S,17R)-3-(Benzoyloxy)-6-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011018 
- CAS : - 173557-40-9
- Molecular Formula : C32H31NO7 
- Molecular Weight : 541.6 
 
	
			                                   
																				(13S,14S,17R)-3,17-Dihydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-6-one
(13S,14S,17R)-3,17-Dihydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-6-one
- Catalogue No.:PAI 05 011019 
- CAS : - NA
- Molecular Formula : C18H20O3 
- Molecular Weight : 284.36 
 
	
			                                   
																				(13S,14S,17R)-3-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(13S,14S,17R)-3-Hydroxy-13-methyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011020 
- CAS : - NA
- Molecular Formula : C25H25NO5 
- Molecular Weight : 419.48 
 
	
			                                   
																				(7S,8R,13S,14S,17R)-3-(Benzoyloxy)-7-hydroxy-13-methyl-6-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(7S,8R,13S,14S,17R)-3-(Benzoyloxy)-7-hydroxy-13-methyl-6-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011021 
- CAS : - NA
- Molecular Formula : C32H29NO8 
- Molecular Weight : 555.58 
 
	
			                                   
																				(13S,14R,17R)-3-(Benzoyloxy)-9-hydroxy-13-methyl-6-oxo-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(13S,14R,17R)-3-(Benzoyloxy)-9-hydroxy-13-methyl-6-oxo-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011022 
- CAS : - NA
- Molecular Formula : C32H27NO8 
- Molecular Weight : 553.57 
 
	
			                                   
																				(8S,13S,14S,17R)-3-(Benzoyloxy)-6,9-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(8S,13S,14S,17R)-3-(Benzoyloxy)-6,9-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011023 
- CAS : - NA
- Molecular Formula : C32H31NO8 
- Molecular Weight : 557.6 
 
	
			                                   
																				(8R,8'R,9S,9'S,13S,13'S,14S,14'S,17S,17'S)-17,17'-(Methylenebis(oxy))bis(13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-ol)
(8R,8'R,9S,9'S,13S,13'S,14S,14'S,17S,17'S)-17,17'-(Methylenebis(oxy))bis(13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-ol)
- Catalogue No.:PAI 05 011028 
- CAS : - 1207730-23-1
- Molecular Formula : C37H48O4 
- Molecular Weight : 556.79 
 
	
			                                   
																				(13S,14S,17R)-17-Hydroxy-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl Benzoate
(13S,14S,17R)-17-Hydroxy-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl Benzoate
- Catalogue No.:PAI 05 011027 
- CAS : - NA
- Molecular Formula : C25H24O3 
- Molecular Weight : 372.46 
 
	
			                                   
																				(13S,14S,17R)-17-Acetoxy-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl Benzoate
(13S,14S,17R)-17-Acetoxy-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl Benzoate
- Catalogue No.:PAI 05 011026 
- CAS : - NA
- Molecular Formula : C27H26O4 
- Molecular Weight : 414.5 
 
	
			                                   
																				(13S,14S,17R)-3-(Benzoyloxy)-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
(13S,14S,17R)-3-(Benzoyloxy)-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-17-yl 4-nitrobenzoate
- Catalogue No.:PAI 05 011024 
- CAS : - NA
- Molecular Formula : C32H27NO6 
- Molecular Weight : 521.57 
 
	
			                                  ![(8R,9S,13S,14S,17S)-17-([1,1'-Biphenyl]-4-yl)-13-m PA 05 0111000](https://www.pharmaffiliates.com/pimages/PA050111000.jpg) 
																				(8R,9S,13S,14S,17S)-17-([1,1'-Biphenyl]-4-yl)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,17-diol
(8R,9S,13S,14S,17S)-17-([1,1'-Biphenyl]-4-yl)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,17-diol
- Catalogue No.:PA 05 0111000 
- CAS : - 1643577-75-6
- Molecular Formula : C30H32O2 
- Molecular Weight : 424.58 
 
	
			                                   
																				(8R,9S,13S,14S,17R)-17-Methoxy-13-methyl-3-propoxy-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene
(8R,9S,13S,14S,17R)-17-Methoxy-13-methyl-3-propoxy-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene
- Catalogue No.:PA 05 0111001 
- CAS : - NA
- Molecular Formula : C22H32O2 
- Molecular Weight : 328.5 

 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
 
 
 
