(3S,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one is the intermedicate of penem ,so if you have any need please contact us.

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Product Details

Product name: (3S,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one



MW: 287.43

Melting point:107-109 ºC

Boiling Point:358.3 ºC at 760 mmHg

Flashing Point: 170.5 ºC

Appearance:white to light yellow crystal powder

Synonyms: 2-Azetidinone,4-(acetyloxy)-3-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-, [3R-[3a(R*),4b]]-;(1'R,3R,4R)-4-acetoxy-3-(1'-tert-butyldimethylsilyloxyethyl)-2-azetidinone;(3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsiloxy)ethyl]azetidin-2-one;4-AA;Azetidon;2-Azetidinone,4-(acetyloxy)-3-[(1R)-1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-,(3R,4R)-;

Assay: 99.0%min

Our services

1. Quick response, any inquiries will be replied within 12 hours.

2. Strictly on quality.

3. Reasonable & competitive factory price

4. Best survices.

5. Trade Assurance, make sure the safety of your funds.

6. OEM/ODM Available.

7. Sample is available for your evaluation & Formulation development.

8. We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS. 

    Or you also can choose your own shipping forwarder.

9. 30 Days Warranty of quality of goods. 


1, How do you guarantee the quality of your products?

We select raw material stricktly and have good quality control system. If any quality problems happen, we will take full responsibility.


2, Can I buy a sample for evaluation? 

Yes, a small percentage of items are available for single-unit sample purchases online. 


3.How long is lead time? 

If we have it in stock, we deliver in 3 days.

If we need to produce, we can negotiate the lead time.


4,What shipping options do I have? 

FEDEX, DHL, TNT, EMS for small quantity.

Sea freight for bulk order.


5,How to make payment? 

We accept payment by telegraphic transfer (T/T),D/P,D/A

Other option: L/C, western union, Paypal, it's all up to you.

Company information

   Xinxiang Hongqi District Houyuan Trading Co., ltd was established in 2011, an import and export enterprise integrating production and sale of chemicals. The company is located in Xinxiang city, Henan province, from the provincial capital Zhengzhou 80km, next to 107 national highway, convenient transportation. In the past 7 years, under the unremitting efforts of all employees, the company exported more than 80% of its products to Japan, South Korea, Southeast Asia and other countries or regions, thus won a place in the foreign market and got a high reputation of overseas customers. And my company’s Meldrum’s acid relies on its excellent product quality, successful landing in the Japanese market, and has obtained the exclusive agency right.

 Our company is in line with the principle of "quality first, customer satisfaction", we hope to establish a long-term cooperative relationship with our customers, create a bright future and contribute to human development hand in hand.

74288-40-7 (2)

Contact us 

E-mail: houyuan888@163.com


Skype: chenruijie0116@outlook.com

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