Yinherb Lab SAR.Ms YK-11 Bulk Raw Powder 99% Purity
Product: YK-11
Other Name: YK11; (17α,20E)-17,20--3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester
Mesh size: 80 Mesh
CAS: 1370003-30-2
MF : C25H34O6
MW : 430.541
Appearance: White Fine Powder
Capacity: 10kgs per month
Source: synthetic
Purity (HPLC) >99.0%
Place of Origin: China Yinherb-Lab
Packing: As per client's requirements
Minimum Order Quantity: 100g
Storage: Store in cool & dry place, Keep away from strong light and heat for 2 years


What is SAR.Ms YK-11?
YK11, known as YK-11, or (17-alpha,20E) 17,20-[(1-methoxyethylidene)bis(oxy)] 3-oxo-19-norpregna-4,20-diene 21-carboxylic acid methyl ester as its chemical name, is the newest ingredient in the SAR.Ms family in recent years. YK11 is said to be the most potent SAR.M without serious side effects such as hair loss, aggression, prostate enlargement, etc. DHT is something people talk with when come across YK11. We may compare them in details in the following.
 
The YK11 molecular is C25H34O6, molecular weight is 430.53. However, the CAS number of YK11 is not unified. One is 137003-76-1;the other is 431579-34-9. 

SAR.Ms YK-11 Benefits
The benefits of YK-11 are that it has shown a strong effect in promoting massive lean muscle gains leading to greater aesthetic and sculpted physique. Many have claim that YK-11 has shown greater muscle, but without the androgenic side effects. YK-11 is the most SAR.M on the market.
 
YK11 and Muscle strength
YK11 is a relatively new discovery, but actually generous of muscle strengthening benefits for users. As indicated in the report of Kanno, muscle cells exposed to it creates more anabolic effects than those exposed with DHT. YK-11 has been proven to work as a great supplement for building muscle strength, especially ideal for bodybuilders and athletes.
 
What takes place is that it induces muscle cells, stimulating them to create a greater number of follistatin, much better than DHT.
 
YK11 and Muscle growth
Because of its selective characteristic, it does what it does very well but only on the anabolic activity of the muscle cells for muscle growth without the adverse estrogen effects, which may cause you humiliation for sporting 'man boobs.'
 
Additionally,this compound does not alter the expression of other genes in the body because it leaves out the androgen receptors in other body parts, including the bones, joints and prostate. Therefore, you can experience great muscle building benefits, except the side effects you might have to face if you would choose typical steroids on the market.
 
• Increased Lean & Dry Muscle Mass
• Increase Libido and Performance
• Increase Strength and Stamina

SAR.Ms YK-11 Mode of Action
How does YK11 work Simply, YK11 is a myostatin inhibitor as well as a powerful androgen.
 
YK11 as a myostatin inhibitor
Myostatin is a protein that, when it is within the body, myostatin restricts the muscle tissue growth and production. In this way, myostatin is bad to bodybuilders. By inhibiting myostatin, YK11 induces muscle cells to make more follistatin, and bodybuilders can experience significantly more muscle mass and exponential strength increases. In this sense, YK11 can be as good as in terms of muscle strengthening.
 
YK11 as an androgen
In addition, YK-11 is an androgen. YK11 attaches itself to the AR (androgen receptor), and has been discovered that muscle cells produce more anabolic factors if exposed to 500 nmol (nanomoles) YK11 than if you expose the same muscle cells to 500 nmol DHT. YK11 fortifies parts of your muscles in the same manner as and the only difference isthat it doesn't have the additional side-effect. The primary factor to keep in mind about YK11 is it may also provide you with a strengthening boost when you're during a workout session so apply for longer without encountering any fatigue. On the top of that, it may also help you to modify your body genetics so that you can build more muscle and faster than before.
 
YK11 shows a lot of promise as an SAR.M. With the muscle growth potential it brings, it's as effective prohormones without the unwanted side effects connected to the latter.
 
SAR.M YK-11 is a powerful SAR.M supplement promoting massive lean muscle gains which is a great benefit for those wanting to have an aesthetic and shredded physique!

YK-11 Dosage
There is no recommended dose for YK11. Some say that it can be taken at doses between 5 and 8 mg per day at an eight-week cycle, some sports nutrition companies say that the YK11 Muscle Building Cycle should have an administered protocol of 4mg 3 times daily to provide the greatest body composition effects, strength and lean mass. I believe both recommendation for YK11 are right, depending on your own situation.





Q1: Can i get some samples 
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.
 
Q2: How to start orders or make payments 
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union or Paypal or Escrow(Alibaba).
 
Q3: How to confirm the Product Quality before placing orders 
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
 
Q4:What's your MOQ 
A:Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
 
Q5: How about delivery leadtime 
A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)
 
Q6:Is there a discount 
A:Different quantity has different discount.
 
Q7: How do you treat quality complaint 
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.