product name	MK-4305
CAS	1030377-33-3
density	1.4±0.1 g/cm3
MF	C23H23ClN6O2
MW	450.921
BP	669±65.0 °C at 760 mmHg
MP	153 °C
FP	358.9±34.3 °C

      MK-4305 is a new type of hypnotic drug developed by Merck. It is a new type of hypnotic drug, which is taken on demand. It is a new type of hypnotic drug, which is taken for a long time Dr. AndrewKrystal, of Duke University Medical Center, said Merck's drug, which blocks Orexins, is a leading cause of insomnia because it sends messages to the body to stay awake. Dr. Krystal, of Duke University Medical Center, said Dr. Merck's drug could be a popular alternative Darryl Leschoepp, head of neurology and ophthalmology at Merck, said MK-4305 is especially suitable for patients who have been unable to sleep through the night and who are receiving existing medications that have shown little or no benefit On August 13, 2014, the U.S. Food and Drug Administration (FDA) approved Merck's Belsomra(MK-4305v), an orexin receptor blocker, for the treatment of sleep and sleep difficulties (insomnia), the first of its kind Orexin is a chemical involved in regulating the wake and sleep cycle and plays an important role in keeping people awake

Packaging & Shipping

   Hebei Lingding Biotechnology Co., Ltd. is a professional business company ,that include pharmaceutical raw materials, pharmaceutical intermediates,and other more than 1000 products of the enterprise,  The registered capital is 3 million yuan, it is a collection of scientific research, production and sales in one of the enterprises.

Since its establishment, the company has always adhered to the core concept of "focus on products, attentive service", adhere to the business purpose of "innovation, professional, win-win", to provide customers with a full range of meticulous and thoughtful services. We will adhere to the customer's serious and responsible attitude, comply with the standardized operation procedures, with efficient execution to complete customer needs.

The company's products are sold all over the world, mainly exported to the United States, Europe, Southeast Asia, Australia, the Middle East and South Africa and other countries.The company has a strong scientific research and technical team, can provide customers with high quality products and a full range of services. We will provide first-class products and better service to face the needs of customers, to meet the challenges of the market.  Welcome domestic and foreign customers to negotiate.
Our Services
 1.Any inquiry or message will be replied within 12 hours.
 2.Professional manufacturer. Welcome to visit our website.
 3.API, Intermediate are available, we can offer Custom Synthesis, and registration as well.
 4.Fast delivery.
 5.After-sale services
FAQ
 Q1. Are you a manufacturer?
Answer: Yes, we have our own factory.

Q2. Do you have GMP or DMF?
Answer: Yes, we have GMP certificate for some products, and we can provide DMF as well.

Q3. What information should I let you know if I want to get a quotation?
Answer: -Quality you require, eg. Assay, Purity, or single impurity
-Quantity you need
-Standard you want, such as USP, EP, JP etc.

Q4. How to make the payment?
Answer: T/T in advance are highly recommended. We can accept Western Union,
Money Gram and Paypal as well.

Q5. When will you deliver the goods?
Answer: For sample(less than 1kg), in about 3 working days after payment; for larger orders (more than 1kg), in about 7 working days after payment.

Q6. How will you deliver the goods?
Answer: We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS, China Air Post. For container products, we can do sea shipping. You also can choose your own shipping forwarder.

Q7. When will we receive the goods?
Answer: For samples, we will send by TNT/DHL/FEDEX/UPS express, usually it takes about 3-5 to reach you; for larger orders, it will take about 7 -10days at most.

Q8. What if we find your products unsatisfied?
Answer: We will send you a COA (Certificate of Analysis) to you first for you to confirm the quality, but if you find our products not confirm with the COA after you receive it, please show us your test result, we will refund you once we confirm that.
 
Q9.Do you have stock?
Answer:As we know,most customers prefer stock,so we will try to keep stock for some products.