Product name	L-Tryptophan
CAS NO.	73-22-3
Other names	L-Tryptophan, Animal-Free
Molecular weight	204.23
Molecular formula	C11H12N2O2
Purity	99%
Appearance	Powder

 

Product Name:	L-tryptophan
Internal Code:	000-00769
CAS number	73-22-3
Molecular formula	C11H12N2O2
ANALYSIS ITEMS	SPECIFICATION	TEST METHOD
Appearance	White to yellowish White crystals or crystalline powder
Identification	Infrared absorption
Specific rotation[a]D20°	-29.4°~-32.8°
Loss on drying	≤0.30%
Residue on ignition	≤0.10%
Sulfate(SO4)	≤0.030%
Chloride	≤0.05%
Iron(Fe)	≤30ppm
Heavy metals(Pb)	≤15ppm
Assay	98.5~101.5%
Organic volatile impurities	As per USP32
PH	5.5-7.0
Packing	Pack in paper-drums and two plastic-bags inside N.W. 25 kgs I.D.35xH51cm.
Storage	Store in a well-closed container away from moisture, light, oxygen.
Shelf Life	24 months under the conditions above and in its original packaging

Application                                                                    

Company Profile                                                           

Hebei Zhuanglai Chemical Trading Co.,Ltd. is a foreign trading company, specializing in developing and producing Chemical raw materials, pharmaceutical intermediates.It has its own factory, which procures itself a competitive edge in market.

For many years, our company has won many clients' support and trust because it always strives to make high-quality merchandise with favorable price. It commits itself to satisfy every clients, in return, our customer show great confidence and respect for our company. In spite of so many loyal customers won these years, Hegui keeps modest all the time and strives to better itself from every aspect.

We are looking forward to cooperating with you and having a win-win relationship with you. Please rest assured that we will satisfy you. Just feel free to contact me.

Packing & Shipping                                                      

FAQ                                                                                

Q1. What is your delivery term and delivery period?

We accept FOB, CIF, etc. You can choose the one which is the most convenient or cost effective for you. Competitive price with ready stocks; by Air within 7days, by sea within 14 days shipping after .

Q2. What's your main markets?

South&North America, Europe, Asia, Africa etc. Top customers among more than 80 countries; 30 years history; One-stop supplier.

Q3. What is the payment term? 

Normally we advise customers use Trade Assurance(is a free payment protection service for buyers is offered by Alibaba group), and we also receive T/T, Western Union or L/C.

Q4. Will you supply samples for test the quality?

We'd like to offer our customers samples for the quality evaluation for most products to develop business.