Products | Suppliers | 登录 | 注册 | 外贸论坛
Zhongshan Yuanyang Bio-pharmaceutical Technology Co.,Ltd
Zhongshan Yuanyang Bio-pharmaceutical Technology Co.,Ltd Top Grade Bio-Pharmaceutical Manufacturer In China Quality Product 丨 Safe Delivery 丨 Professional Service
Verified Supplier

1 Years

Home > Products > Anti Estrogen Steroids >

High Purity Raw Steroids Powder Formestane / Lentaron CAS 566-48-3

Zhongshan Yuanyang Bio-pharmaceutical Technology Co.,Ltd

City: zhongshan




Contact Person:
View Contact Details

High Purity Raw Steroids Powder Formestane / Lentaron CAS 566-48-3

Brand Name : YUANYANG
Model Number : 566-48-3
Certification : GMP, SGS , ISO 9001:2008 , KOSHER
Place of Origin : China
MOQ : Negotiation
Price : Negotiation
Payment Terms : Western Union, MoneyGram, Bank Transfer, Bitcoin
Supply Ability : 100 KG/Month
Delivery Time : Within 7 Work Days
Packaging Details : Stealth And Discreet Packaging
Product Name : Formestane
Other Name : Lentaron
CAS : 566-48-3
Purity : >99%
MF : C19H26O3
MW : 302.41
Appearance : White Powder
Shipping Method : EMS, HKEMS, FEDEX, DHL, UPS, Aramex, ETC
Contact Now

High Purity Raw Steroids Powder Formestane / Lentaron CAS 566-48-3 Anti Estrogen Health Steroid


Lentaron is a type I, steroidal aromatase inhibitor. It is used in the treatment of estrogen-receptor positive breast cancer in post-menopausal women. It is available as an intramuscular depot injection.

Lentaron is often used to suppress estrogen production from anabolic steroids or prohormones. It also acts as a prohormone to 4-hydroxytestosterone, an active steroid which displays weak androgenic activity in addition to acting as a mild aromatase inhibitor.

Lentaron has poor oral bioavailability and as such is no longer popular as many orally active aromatase inhibitors have been identified.


Lentaron is a second generation, irreversible, steroidal aromatase inhibitor. It inhibits the aromatase enzyme responsible for converting androgens to estrogens, thereby preventing estrogen production. Breast cancer may be estrogen sensitive or insensitive. A majority of breast cancers are estrogen sensitive. Estrogen sensitive breast cancer cells depend on estrogen for viability. Thus removal of estrogen from the body can be an effective treatment for hormone sensitive breast cancers.


DescriptionWhite or Almost White Crystalline Powderwhite powder
Specific Rotation+101°~+105°+102.6°
Loss On Drying1.0%max0.27%
Melting Point153~157°C153.0~155.0°C
Organic Volatile Impuritiesmeets the requirement.Conforms
Related Substancesmeets the requirement.Conforms
Residual Solventsmeets the requirement.Conforms
Particle Size100% ≤ 20 micronsConforms
ConclusionThe specification conform with USP35 standard


Aromatase converts androstenedione to estrone, and also converts testosterone to estradiol. Lentaron is often used to suppressestrogen production during anabolic steroids and prohormone cycles. Due largely to Lentarons similarity to androstenedione, it also acts as a prohormone to 4-hydroxytestosterone , an active steroid which displays weak androgenic activity in addition to serving as a mild aromatase inhibitor.

Male bodybuilders and athletes also use it to prevent estrogenic side effects from anabolic steroids, to improve fat loss, and to increase muscle definition while dieting. However, several conclusive studies have demonstrated Lentarons estrogen blocking inferiority when compared to third generation AIs like Arimidex and Femara so its far less popular.


The most common version of it sold was in a topical gel form and it was dosed at 100-200mgs per application. Users would apply it onto clean, dry skin and rub in thoroughly; usually on the thighs or upper arms. It took 1 to 5 minutes to dry.

The injectable version for both breast cancer purposes and bodybuilders is 125mgs twice per week or 250mgs once per week.

Hot Selling Steroid Powder

2CAS: 65-04-317a-Methyl-1-test
4CAS:2446-23-34-Chlorodehydromethyl testosterone(Oral turinabol)
5CAS:1255-49-8Testosterone phenylpropionate
6CAS:57-85-2Testosterone propionate
7CAS:1045-69-8Testosterone acetate
8CAS:72-63-9Methandrostenolone (Dianabol)
9CAS:315-37-7Testosterone enanthate
10CAS:58-20-8Testosterone Cypionate
11CAS:1424-00-6Mester (Proviron)
12CAS:5949-44-0Testosterone Undecanoate
13CAS:15262-86-9testosterone isocaproate
14CAS: 855-19-6Turinabol(4-Chlorotestosterone/Clostebol Acetate)
15CAS: 1039-17-4
16CAS: NOTestosterone Sustanon 250/100
17CAS:5721-91-5Testosterone decanoate
20CAS: 846-48-0Boldenone
21CAS:13103-34-9Boldenone Undecylenate (Equipoise)
22CAS:846-46-0Boldenone Acetate
23CAS:106505-90-2Boldenone Propionate
23CAS:106505-90-2Boldenone Cypionate
24CAS:3704-09-4Miboler one
25CAS:10161-33-8Tren bolone
26CAS:10161-34-9Tren bolone acetate(Finaplix H/Revalor-H)
27CAS:472-61-546tren bolone enanthate(parabolan)
28CAS:23454-33-3Tren bolone Hexahydrobenzyl Carbonate
29CAS:965-93-5Metribo lone
30CAS: 434-22-0Nandro lone
31CAS:62-90-8Nandro lone Phenypropionate (Durabolin)
32CAS: 601-63-8Nandro lone cypionate
33CAS:360-70-3Nandro lone decanoate(DECA) Deca durabolin
34CAS: 862-89-5Nandro lone Undecylate
35CAS: 153-00-4Metenol
34CAS:434-05-9Methenolone Acetate(Primobolan)
35CAS:303-42-4Methenolone enanthate [USAN]
36CAS:521-11-9Mestano lone
38CAS: 7207-92-3Nandro lone propionate
39CAS:521-18-6Stanolone (androstanol)
40CAS: 5630-53-5Tibol
41CAS: 5197-58-0Methylstenbolone
42CAS:434-07-1Oxymet (Anadrol)
45CAS:3381-88-2Superdrol Powder (methyl-drostanol)
46CAS: 853-23-6Dehydroisoandrosterone 3-acetate
47CAS: 53-43-0Dehy droepiandrosterone
48CAS: 481-29-8Epiandrosterone
49CAS: 566-19-87-Keto-dehy droepiandrosterone
50CAS:521-12-0Drostanol Propionate (Masteron)
51CAS:472-61-145Drostanol Enanthate
54CAS:50-50-0Estradiol benzoate
57CAS: 4956-37-0Estradiol Enanthate
56CAS: 50-28-2-Estradiol
58CAS: 224785-91-5vardenafil
59CAS: 65-19-0Yohimbine HCl
61CAS: 131543-23-2win 55,212-2 mesylate
61CAS: 831217-01-7Acetildenafil (Hongdenafil)
61CAS: 330784-47-9Avanafil
63CAS: 18850-57-5Estrone
65CAS:136-47-0tetracaine hydrochloride
66CAS: 73-78-9lidocaine hydrochloride
67CAS: 137-58-6Linocaine Base
68CAS: 23239-88-5Benzocaine hydrochloride
69CAS: 6893-02-3L-Triiodothyronine/T3
70CAS:25416-65-3Sodium levothyroxine/T4 sodium salt
71CAS:105-41-91,3-Dimethylpentylamine HCl
72CAS: 168273-06-1rimonabant
73CAS: 89778-27-8Toremifene citrate
74CAS: 55-31-2L-Epinephrine HCl
77CAS:54965-24-1Tamoxi Citrate (Nolvadex)
78CAS: 73-31-4melatonin
80CAS: 104632-25-9Pramipexole dihydrochloride monohydrate
82CAS:50-41-9Clomifene Citrate
83CAS: 107868-30-4Aromasin
86CAS:2392-39-4Dexamethasone Sodium Phosphate
86Ethylphe Hydrochloride
88CAS: 2322-77-2Methoxydienone
91CAS:100-51-6benzyl alcohol

Product Tags:

anti estrogen supplements


anti estrogen products

China Customized Inflatable Bumper Ball Game Bubble Adult Grass CE supplier

High Purity Raw Steroids Powder Formestane / Lentaron CAS 566-48-3 Images

Send your message to this supplier
Enter your email please.
To: Zhongshan Yuanyang Bio-pharmaceutical Technology Co.,Ltd
Characters Remaining: (0/3000)

Français| Русский язык| Español| Português| 日本語

Home| Products| Suppliers| Site Map| About Us| Contact Us| Help| 关于我们| 联系我们

Copyright © 2009 - 2017 All rights reserved.

Inquiry Cart 0