GMP standard L-tryptophan CAS 73 -22-3 tryptophan

Product  DescriptionL-TRYPTOPHANCAS No: 73-22-3Molecular Formula: C11H12N2O2 Molecular Weight: 204.23Appearance: White crystal or crystalline powder and material produce ItemsStandardTest ResultAppearanceWhite to yellowish white crystals or crystalline powderConformsIdentificationInfrared AbsorptionConformsAs

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Product  Description

CAS No: 73-22-3
Molecular Formula: C11H12N2O2 
Molecular Weight: 204.23

Appearance: White crystal or crystalline powder and material produce




Test Result


White to yellowish white crystals or crystalline powder



Infrared Absorption





Specific rotation [α]D25






Loss on drying



Residue on ignition












Heavy metals, as Pb



Organic volatile impurities

Meets the requirements


Feed nutrition fortifier, threonine is a kind of essential amino acids. Threonine is often added to the young pigs and poultry feed, is the second limiting amino acid of pig feed and poultry feed third limiting amino acids. Add in wheat, barley and other grain feed.

Used to aid in the treatment of peptic ulcer. Also can treat anemia and angina pectoris, aortic disease, cardiac function not entire cardiovascular system diseases

Company  Information
Wuhan Disel BiotechnoloCo.,Ltd ( shorted as Disel Biotech ) is located in Wuhan Donhu High-Tech Economic Development Zone,  Wuhan is a big central city in China with convenient transportation abundant human resources. Disel Biotech is a Modern advanced enterprise specializing in production and exportation of APIs, peptides, plant extracts etc, has invested and closed cooperated with domestic manufactures qualified with GMP, DMF, FDA and Laboratories from famous Universities to meet the different customers' needs from grams to tonnage quantity, which makes Disel Biotech to be more flexible and easily to supply highly cost-effective  products with high quality and better service to customers.

Our Certificates

GMP Standard L-Tryptophan CAS 73-22-3 Tryptophan

Our Advantage:

1.We have stock so we can delivery quickly at the very day when receive the payment.

2.Best price, first class service, high successful delivery rate. A discount would be given when you make a large order.

3.High quality guarenteed, once any problem is found, the package would be reshipped for you

4.Shipping by express (FedEx,UPS,DHL,EMS TNT HKEMS), by air . The most professional forwarder would be recommanded for you.

5 . Warm aftersale service for you 24/7 . Any of your question would be solved for the first as soon as possible . Adhering to the principle of customer first conviction . we will provide the best and the most sincere services as possible as we can.

GMP Standard L-Tryptophan CAS 73-22-3 Tryptophan


1. Sent out in 24hours once payment comfirm.

2. Professional agent make sure our ship fastly and safety

3.Offer your tracking number to you once we get it ,in order to facilitate you track the express

GMP Standard L-Tryptophan CAS 73-22-3 Tryptophan


1.How about parcel delivery success rate ?

Our goods packing will not contain any hormone information and can be sent out from different areas of china. At present,the goods customs clearance rate we send to United states and Europe is 99%. As for Canada, Brazil of quite high buckle close rate area, we also have a new way to get through the customs. We also have completely re-send policy to some areas.

2.What is The Minimum And Maximum Amount Of Steroid Powder I Can Order At One Time?

Normally, our min.order quantity is 10g,please feel free to contact us about the specific order.
We suggest the net weight of each package should be less than 3.5kg. But if your order quantity is more than 3.5 kg, we will split the goods into several packages and then send you separately.

3.Do You Ship Over The Weekend?

We use EMS,TNT,FEDEX,DHL four kinds of couriers. EMS don't collected parcels over the weekend. The packages can be shipped out normally before 12:00 a.m in Beijing time if you choose to ship by TNT 


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