夜夜高潮夜夜爽夜夜爱爱,亚洲综合色区另类av,中文字幕人妻伦伦

: Check Encyclopedia

[(8S,11S,13S,14S)-3,9-dihydroxy-13-methyl-17-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-11-yl] nitrate

CAS No. : 105801-89-6 Formula : C18H21NO6 Molecular Weight. : 347.362 Check Encyclopedia

Synonyms : 9-Hydroxy-11-nitroxyestrone; 9alpha-Hydroxyestrone-11beta-nitrate; 9-Hydroxyestrone-11-nitrate;

Supplier : All (1)

Recommended Supplier	Purity	Lead Time	Packing	Price	View
Ibookbio	96%	7Day (s)	100g	Request For Qutation

More Suppliers

: Check Encyclopedia

methyl 4-(7,12-dihydroxy-10,13-dimethyl-3-oxo-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl)pentanoate

CAS No. : 14772-99-7 Formula : C25H40O5 Molecular Weight. : 420.582 Check Encyclopedia

Synonyms : Methyl 7,12-dihydroxy-3-oxocholan-24-oate; EINECS 238-839-1; Methyl 7alpha,12alpha-dihydroxy-3-oxo-5beta-cholan-24-oate;

Supplier : All (4) China Suppliers (1) Price Available (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Dayang Chem (Hangzhou) Co., Ltd	98%	7Day (s)	1kg	Request For Qutation
MANCHESTER ORGANICS LIMITED	95%	10Day (s)	250mg	$329.12
Molchemical	96%	7Day (s)	1kg	Request For Qutation
Ibookbio	96%	7Day (s)	500g	Request For Qutation
Chemos GmbH	96%	7Day (s)	500g	Request For Qutation

More Suppliers

: Check Encyclopedia

3-(3,14-dihydroxy-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,15-dodecahydrocyclopenta[a]phenanthren-17-yl)-2H-furan-5-one

CAS No. : 2763-20-4 Formula : C23H32O4 Molecular Weight. : 372.498 Check Encyclopedia

Synonyms : 16-Anhydrogitoxygenin; RHODEXIN B; 16-anhydrogitoxigenin;

Supplier : All (3) China Suppliers (1) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Hangzhou J&H Chemical Co., Ltd.	98%	14Day (s)	1kg	Request For Qutation
Ibookbio	96%	7Day (s)	500g	Request For Qutation
CFM Oskar Tropitzsch	96%	7Day (s)	25kg	Request For Qutation

More Suppliers

: Check Encyclopedia

(3S,7S,8R,9S,10R,13S,14S)-3,7-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one

CAS No. : 53-00-9 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Synonyms : 3|A,7|A-Dihydroxy-5-androsten-17-one; 7-Hydroxydehydroepiandrosterone; 7a-Hydroxydehydroepiandrosterone; 7-|A-OH-DHEA; 7|A-Hydroxy-DHEA;

Supplier : All (29) China Suppliers (15) Contractor (5)

Recommended Supplier	Purity	Lead Time	Packing	Price
Hangzhou J&H Chemical Co., Ltd.	98%	14Day (s)	1kg	Request For Qutation
Simagchem Corp.	99%	3Day (s)	25kg/桶	Request For Qutation
Career Henan Chemical Co	0.98	3Day (s)	10g	Request For Qutation
Molchemical	96%	7Day (s)	500g	Request For Qutation
Saan Chemical Technology (Shanghai) Co., Ltd.	98%	7Day (s)	500mg	Request For Qutation

More Suppliers

: Check Encyclopedia

(6R,8R,9S,13S,14S)-3,6-dihydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one

CAS No. : 1229-25-0 Formula : C18H22O3 Molecular Weight. : 286.365 Check Encyclopedia

Synonyms : 6|A-Hydroxy Estrone;

Supplier : All (8) China Suppliers (5) Price Available (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Molchemical	96%	7Day (s)	100g	Request For Qutation
Saan Chemical Technology (Shanghai) Co., Ltd.	98%	7Day (s)	25mg	Request For Qutation
American Custom Chemicals Corporation	96%	7Day (s)	500g	Request For Qutation
Tianjin Xima Technology Co., Ltd.	98%	21Day (s)	10g	Request For Qutation
Ibookbio	96%	7Day (s)	500g	Request For Qutation

More Suppliers

: Check Encyclopedia

(6S,8R,9S,10R,13S,14S,17S)-6,17-dihydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one

CAS No. : 2944-87-8 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Supplier : All (12) China Suppliers (6) Contractor (3)

Recommended Supplier	Purity	Lead Time	Packing	Price
Hangzhou J&H Chemical Co., Ltd.	99%	14Day (s)	500g	Request For Qutation
Career Henan Chemical Co	98%	3Day (s)	10kg	Request For Qutation
Molchemical	96%	7Day (s)	100g	Request For Qutation
Saan Chemical Technology (Shanghai) Co., Ltd.	98%	7Day (s)	10mg	Request For Qutation
American Custom Chemicals Corporation	96%	7Day (s)	500g	Request For Qutation

More Suppliers

: Check Encyclopedia

(8S,9S,10R,11S,13S,14S,17S)-11,17-dihydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one

CAS No. : 1816-85-9 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Synonyms : 11beta-Hydroxytestosterone; 11-Hydroxytestosterone; 11b-hydroxytestosterone; 11beta,17beta-Dihydroxyandrost-4-en-3-one;

Supplier : All (8) China Suppliers (3) Price Available (1) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Career Henan Chemical Co	98%	3Day (s)	1kg	Request For Qutation
American Custom Chemicals Corporation	96%	7Day (s)	500g	Request For Qutation
Tetrahedron Scientific Inc	96%	7Day (s)	1噸	Request For Qutation
Chemical Point UG	96%	7Day (s)	1噸	Request For Qutation
Carbone Scientific Co., Ltd.	96%	7Day (s)	500g	Request For Qutation

More Suppliers

: Check Encyclopedia

(8R,9S,13S,14S,17R)-17-ethynyl-3,17-dihydroxy-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-16-one

CAS No. : 1350468-76-6 Formula : C20H22O3 Molecular Weight. : 310.387 Check Encyclopedia

Synonyms : UNII-HTC87NA4WY; 16-Oxo Ethynyl Estradiol; 16-Oxoethinylestradiol;

Supplier : All (5) China Suppliers (2) Price Available (1) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Hangzhou J&H Chemical Co., Ltd.	99%	14Day (s)	500g	Request For Qutation
Santa Cruz Biotechnology, Inc.	96%	10Day (s)	1mg	$400
NE Scientific Natick Innovation Center	99%	7Day (s)	1mg	Request For Qutation
TLC PharmaChem., Inc.	96%	7Day (s)	10g	Request For Qutation

More Suppliers

: Check Encyclopedia

(3S,7R,8R,9S,10R,13S,14S)-3,7-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one

CAS No. : 2487-48-1 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Supplier : All (17) China Suppliers (7) Price Available (2) Contractor (3)

Recommended Supplier	Purity	Lead Time	Packing	Price
Hangzhou J&H Chemical Co., Ltd.	98%	14Day (s)	1kg	Request For Qutation
Career Henan Chemical Co	0.98	3Day (s)	10g	Request For Qutation
Hangzhou Bingochem Co., Ltd.	98%	7Day (s)	1kg	Request For Qutation
Chemtos	96%	1Day (s)	10mg	$1900
American Custom Chemicals Corporation	96%	7Day (s)	500g	Request For Qutation

More Suppliers

: Check Encyclopedia

(8R,9S,13S,14S,17R)-17-ethynyl-3,17-dihydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-6-one

CAS No. : 38002-18-5 Formula : C20H22O3 Molecular Weight. : 310.387 Check Encyclopedia

Synonyms : 6-Keto Ethynyl Estradiol; 6-oxo ethinylestradiol; 17-ethinyl-6-oxo-estradiol; UNII-9M79F2839C;

Supplier : All (8) China Suppliers (5) Price Available (2)

Recommended Supplier	Purity	Lead Time	Packing	Price
Shanghai Miner Chemical Technology Co., Ltd.	96%	21Day (s)	20mg	$1006.5
Molchemical	96%	7Day (s)	10g	Request For Qutation
Saan Chemical Technology (Shanghai) Co., Ltd.	98%	7Day (s)	100mg	Request For Qutation
Shenzhen Regent Biochemistry Technology CO., Ltd.	96%	7Day (s)	500g	Request For Qutation
American Custom Chemicals Corporation	96%	7Day (s)	100g	Request For Qutation

More Suppliers

: Check Encyclopedia

(8R,9S,13S,14S)-1,4,16,16-tetradeuterio-2,3-dihydroxy-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-one

CAS No. : 81586-97-2 Formula : C18H18D4O3 Molecular Weight. : 290.39 Check Encyclopedia

Synonyms : 2-Hydroxyestrone-d4; Catecholestrone-d4;

Supplier : All (10) China Suppliers (4) Price Available (3) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Career Henan Chemical Co	0.98	3Day (s)	1kg	$1
Saan Chemical Technology (Shanghai) Co., Ltd.	96%	10Day (s)	1mg	$326.67
Chengdu SinoStandards Bio-Tech Co.,Ltd.	98%	7Day (s)	5mg	Request For Qutation
American Custom Chemicals Corporation	96%	7Day (s)	100g	Request For Qutation
Chemos GmbH	96%	7Day (s)	100g	Request For Qutation

More Suppliers

: Check Encyclopedia

16α-hydroxydehydroepiandrosterone

CAS No. : 1232-73-1 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Synonyms : 16alpha-hydroxydehydroepiandrosterone; 16-hydroxydehydroisoandrosterone; (3S,8R,9S,10R,13S,14S,16R)-3,16-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one; 16-Hydroxydehydroepiandrosterone; 16alpha-Hydroxydehydroisoandrosterone; 3beta,16alpha-Dihydroxyandrost-5-en-17-one; 16a-Hydroxy-DHEA;

Supplier : All (4) China Suppliers (2) Price Available (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Tianjin Xima Technology Co., Ltd.	98%	21Day (s)	10g	Request For Qutation
Ibookbio	96%	7Day (s)	10g	Request For Qutation
NE Scientific Natick Innovation Center	99%	7Day (s)	50mg	Request For Qutation

More Suppliers

: Check Encyclopedia

(3S,10R,13S,17S)-3,17-dihydroxy-10,13-dimethyl-1,2,3,4,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-7-one

CAS No. : 2226-65-5 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Synonyms : 3beta,17beta-Dihydroxyandrost-5-en-7-one; AND076;

Supplier : All (5) China Suppliers (3) Price Available (1) Contractor (2)

Recommended Supplier	Purity	Lead Time	Packing	Price
Career Henan Chemical Co	98%	3Day (s)	10g	$1
Topharman Shanghai Co., Ltd.	98%	14Day (s)	25kg	Request For Qutation
Shenzhen Yajiaite Industrial Co., Ltd.	96%	7Day (s)	100g	Request For Qutation
YONGYICHEM		IN STOCK	1kg	Request For Qutation
Waterstonetech, LLC	98%	14Day (s)	1噸	Request For Qutation

More Suppliers

: Check Encyclopedia

4-(3,12-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acid

CAS No. : 30635-00-8 Formula : C24H40O4 Molecular Weight. : 392.572 Check Encyclopedia

Synonyms : 3,12-Dihydroxycholan-24-oic acid; Deoxycholsaeure; Desoxycholic acid; Desoxycholsaeure; (4R)-4-[(3R,5R,8R,9S,10S,12R,13R,14S,17R)-3,12-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid;

Supplier : All (1) China Suppliers (1)

Recommended Supplier	Purity	Lead Time	Packing	Price	View
Molchemical	96%	7Day (s)	1噸	Request For Qutation

More Suppliers

: Check Encyclopedia

1-(6-fluoro-3,5-dihydroxy-10,13-dimethyl-1,2,3,4,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl)ethanone

CAS No. : 1868-98-0 Formula : C21H33FO3 Molecular Weight. : 352.483 Check Encyclopedia

Synonyms : [(6S,8R,9S,10R,13S,14S,17R)-6-chloro-17-ethanoyl-10,13-dimethyl-3-oxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl] ethanoate; 17-Acetoxy-9a-chloropregan-4-ene-3,20-dione; [(6S,8R,9S,10R,13S,14S,17R)-17-acetyl-6-chloro-10,13-dimethyl-3-oxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl] acetate; 6a-chloro-17-acetoxyprogesterone; acetic acid [(6S,8R,9S,10R,13S,14S,17R)-17-acetyl-6-chloro-3-keto-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl] ester;

Supplier : All (2) China Suppliers (2) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price	View
Hangzhou J&H Chemical Co., Ltd.	99%	14Day (s)	500g	Request For Qutation
Molchemical	96%	7Day (s)	1噸	Request For Qutation

More Suppliers

: Check Encyclopedia

4-(3,6-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acid

CAS No. : 668-49-5 Formula : C24H40O4 Molecular Weight. : 392.572 Check Encyclopedia

Synonyms : pregnan-3,6-diol-20-one; 3ALPHA,6ALPHA-Dihydroxy-5B-pregnan-20-one; Murocholic acid; 5beta-Pregnan-20-one,3alpha,6alpha-dihydroxy;

Supplier : All (3) China Suppliers (2) Price Available (1) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price
Hangzhou J&H Chemical Co., Ltd.	≥98%	7Day (s)	100g	Request For Qutation
Santa Cruz Biotechnology, Inc.	96%	10Day (s)	2mg	$113
Molchemical	96%	7Day (s)	1噸	Request For Qutation

More Suppliers

: Check Encyclopedia

(8S,9S,10R,11R,13S,14S,17S)-11,17-dihydroxy-10,13-dimethyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-one

CAS No. : 30915-20-9 Formula : C19H26O3 Molecular Weight. : 302.408 Check Encyclopedia

Synonyms :

Supplier : All (2) China Suppliers (1) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price	View
Hangzhou J&H Chemical Co., Ltd.	99%	14Day (s)	500g	Request For Qutation
Ibookbio	96%	7Day (s)	500g	Request For Qutation

More Suppliers

: Check Encyclopedia

(3S,8R,9S,10R,13S,14S,17R)-3,17-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,17-dodecahydrocyclopenta[a]phenanthren-16-one

CAS No. : 1159-66-6 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Synonyms : 16-Oxoandrostenediol; 16-Ketoandrostenediol; 3beta,17beta-Dihydroxyandrost-5-en-16-one;

Supplier : All (2) China Suppliers (1) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price	View
Career Henan Chemical Co	98%	3Day (s)	25kg	Request For Qutation
Ibookbio	96%	7Day (s)	100g	Request For Qutation

More Suppliers

: Check Encyclopedia

(3S,8R,9S,10R,13S,14S,16S)-3,16-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one

CAS No. : 1159-68-8 Formula : C19H28O3 Molecular Weight. : 304.424 Check Encyclopedia

Synonyms : 16beta-Hydroxydehydroepiandrosterone; Androst-5-en-17-one,3,16-dihydroxy-,(3beta,16beta);

Supplier : All (2) China Suppliers (1) Contractor (1)

Recommended Supplier	Purity	Lead Time	Packing	Price	View
Career Henan Chemical Co	98%	3Day (s)	25kg	Request For Qutation
Cerilliant Corporation	95%	7Day (s)	100g	Request For Qutation

More Suppliers

: Check Encyclopedia

(8S,9S,10S,13S,14S)-3,11-dihydroxy-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-17-one

CAS No. : 57-61-4 Formula : C19H30O3 Molecular Weight. : 306.44 Check Encyclopedia

Synonyms : 11B-hydroxyandrosterone crystalline; 11-$b-Hydroxyandrosterone;

Supplier : All (13) China Suppliers (6) Price Available (1) Contractor (2)

Recommended Supplier	Purity	Lead Time	Packing	Price
Hangzhou J&H Chemical Co., Ltd.	98%	14Day (s)	1kg	Request For Qutation
Career Henan Chemical Co	0.98	3Day (s)	10g	Request For Qutation
Molchemical	95%	IN STOCK	1噸	Request For Qutation
Ibookbio	96%	7Day (s)	500g	Request For Qutation
Tetrahedron Scientific Inc	96%	7Day (s)	1噸	Request For Qutation

More Suppliers

综合成人亚洲偷自拍色,一个人看的免费高清www视频,伊人色综合一区二区三区,在线播放五十路熟妇,伊人激情av一区二区三区

All Categories

[(8S,11S,13S,14S)-3,9-dihydroxy-13-methyl-17-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-11-yl] nitrate

methyl 4-(7,12-dihydroxy-10,13-dimethyl-3-oxo-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl)pentanoate

3-(3,14-dihydroxy-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,15-dodecahydrocyclopenta[a]phenanthren-17-yl)-2H-furan-5-one

(3S,7S,8R,9S,10R,13S,14S)-3,7-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one

(6R,8R,9S,13S,14S)-3,6-dihydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one

(6S,8R,9S,10R,13S,14S,17S)-6,17-dihydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one

(8S,9S,10R,11S,13S,14S,17S)-11,17-dihydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one

(8R,9S,13S,14S,17R)-17-ethynyl-3,17-dihydroxy-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-16-one

(3S,7R,8R,9S,10R,13S,14S)-3,7-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one

(8R,9S,13S,14S,17R)-17-ethynyl-3,17-dihydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-6-one

(8R,9S,13S,14S)-1,4,16,16-tetradeuterio-2,3-dihydroxy-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-one

16α-hydroxydehydroepiandrosterone

(3S,10R,13S,17S)-3,17-dihydroxy-10,13-dimethyl-1,2,3,4,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-7-one

4-(3,12-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acid

1-(6-fluoro-3,5-dihydroxy-10,13-dimethyl-1,2,3,4,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl)ethanone

4-(3,6-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acid

(8S,9S,10R,11R,13S,14S,17S)-11,17-dihydroxy-10,13-dimethyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-one

(3S,8R,9S,10R,13S,14S,17R)-3,17-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,17-dodecahydrocyclopenta[a]phenanthren-16-one

(3S,8R,9S,10R,13S,14S,16S)-3,16-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one

(8S,9S,10S,13S,14S)-3,11-dihydroxy-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-17-one