 Home > Active Pharmaceutical Ingredients > Feed Additive > L-Tryptophan for Sale > Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot!

Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot! buy - large image1

Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot! buy - image1

Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot! buy - image2

Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot! buy - image3

Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot! buy - image4

Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot!

TDS 28 Inquiries

Unit Price: Get Latest Price 

CAS No.:

73-22-3

Grade:

Feed Grade

Content:

99%

Port:

tianjin

Brand:

Packaging:

25kg/Drum

Sample Available:

Yes

Price valid (until):

2025-05-31

Contact Supplier

 Chat Now

Hebei Shunxing Import and Export Co.,Ltd

Company Type:

Trader

Location:

China

Payment Terms:

TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

Average Lead Time:

7 days

Qualification:

Main Products:

HPMC,Lithium Carbonate,Cellulose Acetate Tow,EVA resin,Terpene Resin,PP fiber

 Visit Store

Product Details
Seller Information
Inquiry History

Description

Product Parameters

CAS NO: 73-22-3
HS CODE: 29339900
Package:25kg / bag
Formula: C11H12N2O2

Items	Standard GB8245-87 (NY39-1987)
Appearance	White or light brown powder,odorless or slight special odor
Assay (as C6H14N2O2·HCl on dry basis)	≥98.5%
α20 DSpecific rotation	-29.0°~-32.8°
Loss on Drying	≤0.5%
Crude Ash	≤0.5%
CD	≤0.0002%
PB	≤0.0005%
AS	≤0.0002%
HG	≤0.0001%
Salmonella bacteria	Non- detective
PH(10g/dl)	5.0~7.0

BRAND

1.Tryptophan is an important nutrient. It can participate in the renewal of plasma protein in animals, and can promote the role of Iactochrome, but also contribute to the synthesis of niacin and heme, can significantly increase the antibodies in pregnant animals.
2. When the livestock lack of tryptophan, growth stagnation, weight loss, fat accumulation decreased, the testis of male animals contracted. Tryptophan can increase the animal globin content, thus enhancing disease resistance.
3. Among the commonly used feedstuff, it is the first, second, and third limiting amino acids of meat and bone powder, corn, and large soybean meal. In recent years, due to the heavy use of methi-onine and lysine in the compound feed, tryptophan became the major limiting amino acid in the feed.
4. Tryptophan, as an essential amino acid that cannot be synthesized in animals and has a number of physiological functions, has been recognized as one of the six feed grade amino acids by the China's Ministry of Agriculture, becoming the third largest feed added amino acid after lysine and methi-onine.

Tryptophan can reduce the ni-trogen emission of poultry manure and improve the utilization rate of crude protein, thus reducing the environmental pollution caused by intensive livestock and poultry breeding. Adding tryptophan can reduce the aggression of chicken, reduce pecking, anal phenomenon.
According to the relevant studies, adding a certain amount of tryptophan to the feed can improve the pig feed intake, promote its growth, slow down the stress, improve its immunity and improve the meat quality. Similarly, the tail biting phenomenon caused by weaning and dense rearing can also be solved by tryptophan supplementation.
TRANSPORT

Product Categories

Packaging & Shipping

Detailed Photos

Application

unctions and Benefits

Promotes Growth and Development: L-Tryptophan is indispensable for animal growth and weight gain.

Regulates Mood and Behavior: As a precursor to serotonin, L-Tryptophan helps reduce stress responses in animals.

Optimizes Protein Utilization: Balances amino acid profiles in animal diets, working synergistically with other essential amino acids.

Shop Factory Supply Directly Amino Acid Feed Grade L-Tryptophan-Detailed Image 14

Shop Factory Supply Directly Amino Acid Feed Grade L-Tryptophan-Detailed Image 15

Shop Factory Supply Directly Amino Acid Feed Grade L-Tryptophan-Detailed Image 16

Usage Guidelines

The recommended dosage depends on the specific feed formula and animal species, typically adding 0.05%-0.15% to the total feed.

Pig Feed: Add 0.05%-0.1%.

Poultry Feed: Add 0.05%-0.15%.

Ruminant Feed: Add 0.02%-0.05%.

Packaging Information

Packaging: Available in various packaging options, with a common packaging size of 25 kg bags for convenience in transportation and storage.

Storage Conditions: Store in a dry, cool place, avoiding high temperatures and moisture.

Shelf Life: The product has a shelf life of two years under appropriate storage conditions

Shop Top Factory Directly Exports Valine for Improve Poultry Reproductive Efficiency-Detailed Image 10

Advantages:
Our Guarantee on quality
1)Purchasing
Thorough market research, understand the price of raw materials and performance.To the procurement source to understand fully, and fully guarantee the quality of the procurement of raw materials.
2) Inspection
Four steps: sampling, sample pretreatment, measuring and data processing.
3) Producing
a)Each operator must do self-inspection of products and make the corresponding inspection records.
b)Full-time inspectors through check the operator self-inspection, and review and sign in the corresponding record. Full-time inspection is responsible for inspection of finished product, and make the finished product incoming inspection records.
4) Before selling
Test result can be provided before selling.
Third-party detection institution is allowed if you are not satisfied with test results.
4.We provide the professional test data and product information ,eg: COA, HPLC

Superiority
1.Professional synthesis laboratory and manufacture /production base.
2.Strong synthesis team and service team. Professional data management.
3.We provide the professional test data and product information ,eg: MSDS,COA
4..Any inquiries will be replied within 48 hours.
5.All kinds of shipping methods, eg: FedEx,DHL,TNT,BY SEA and BY AIR.
7.Shipping information includes Commercial Invoice,Packing List,COA,BSE/TSE.If your markets have any special requirements, please let us know.
8.We can accept various payment methods,L/C,T/T, etc.
9.Professional packaging can be according the customers' requirement.
10.Product application: Medicinal Chemistry , Biomedicine, Pharmaceutical intermediate, Chemistry experiment ,Biological experiments ,Chemical reagent , for R&D use.

After Sales Service

We guarantee that 100% of your parcel passes through the United States, Britain,Canada, Mexico, France, Germany, Spain, Belgium, Sweden, Poland, and Russia. We have powerful customs clearance agencies in these countries, and our customs clearance company will clear your parcel without any customs issues, sometimes even 1000 kg. Door to door service DDP service. To ensure 100% receipt of your package, if there are any customs issues, we are willing to reissue your package free of charge. Let you have a good experience of our strong shipping capabilities.

We have many customers in those countries and retain long-term cooperation. Provide a large number of high-quality products. They made a lot of money. I am sure we can make more money together. There is money to have glory.

Package and shipment

17.5mt/700carons in 20'' FCL or customized according to your needs.

Shop Factory Best Price Amino Acid Food Additives L -Asparagine Monohydrate-Detailed Image 5

Package:

Delivery Time: Around 3-5 workdays after your payment.
Package: In fiber-drums with two-plastic bags inside.
Net Weight: 25kgs/Drum / Gross Weight: 28kgs/Drum
Drum Size & Volume: I.D.42cm × H52cm, 0.08 m³/ Drum
Storage: Stored in dry and cool place, keep away from strong light and heat.
Shelf Life: Two years when properly stored.

Shop Factory Best Price Amino Acid Food Additives L -Asparagine Monohydrate-Detailed Image 6

Shipping:

DHL Express, FEDEX and EMS for quantity less than 50KG, usually called as DDU service;
Sea shipping for quantity over 500KG; and air shipping is available for 50KG above;
For high value products, please select air shipping and DHL express for safe;
Please confirm if you can make the clearance when goods reach your customs before placing an order, for buyers from Mexico, Turkey, Italy, Romania,Russia, and other remote area.

Company Profile
Hebei Shunxing Import and Export Co.,Ltd at Shijiazhuang ,covering an area of 10,000M2,is a Chemical high-tech group company with an integrated system of researching,development,production, marketing and sales ability. It mainly produces Inorganic Chemicals, Organic Chemicals, Food and Feed Additives. Our products are widely applied to detergent, water treatment, rubber, plastic, leather, tanning, textiles, paint, oil drilling, food, feeding and pharmaceutical. With ISO9001 quality management system, all our products are manufactured by strict procedures. With the advanced test equipments in our Lab, all shipments are tested carefully before delivery to assure the quality consistency. The quality standard for each customer is established. All the sample and shipment lots have been filed detailed and be able to traced. Through many years of development, our company has become a large-scale enterprise with research, production,assembly and marketing capabilities. Guaranteeing stable and timely supply, credible quality and sincere service, our products sell well in both domestic and overseas markets. Our aim is to provide customers the high quality products, most competitive pricing, the shortest delivery time and the unequaled service. We pursue the management tenet of "Quality is Superior, Service is Supreme, Reputation is First", and will sincerely create and share success with all clients. We welcome you to contact us for more information and look forward to working with you!

Shop Top Factory Direct Supply Garlic Powder with Root 100-120 Mesh for Seasoning Spice-Detailed Image 5

Shop Top Factory Direct Supply Garlic Powder with Root 100-120 Mesh for Seasoning Spice-Detailed Image 6

ECHEMI Editorial Reference

L-Tryptophan (Tryptophan) is an essential amino acid that is the precursor of serotonin, melatonin, and vitamin B3[1].
L-tryptophan is a white powder with a flat taste. An essential amino acid; occurs in isomeric forms. (NTP, 1992)|Solid
L-tryptophan is a white powder with a flat taste. An essential amino acid; occurs in isomeric forms. (NTP, 1992)|L-tryptophan is the L-enantiomer of tryptophan. It has a role as an antidepressant, a nutraceutical, a micronutrient, a plant metabolite, a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite. It is an erythrose 4-phosphate/phosphoenolpyruvate family amino acid, a proteinogenic amino acid, a tryptophan and a L-alpha-amino acid. It is a conjugate base of a L-tryptophanium. It is a conjugate acid of a L-tryptophanate. It is an enantiomer of a D-tryptophan. It is a tautomer of a L-tryptophan zwitterion.|An essential amino acid that is necessary for normal growth in infants and for nitrogen balance in adults. It is a precursor of indole alkaloids in plants. It is a precursor of serotonin (hence its use as an antidepressant and sleep aid). It can be a precursor to niacin, albeit inefficiently, in mammals.|Tryptophan is the least plentiful of all 22 amino acids and an essential amino acid in humans (provided by food), Tryptophan is found in most proteins and a precursor of serotonin. Tryptophan is converted to 5-hydroxy-tryptophan (5-HTP), converted in turn to serotonin, a neurotransmitter essential in regulating appetite, sleep, mood, and pain. Tryptophan is a natural sedative and present in dairy products, meats, brown rice, fish, and soybeans. (NCI04)|An essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals.

Certificates

Basic Info

Product Name:

L-Tryptophan

Other Name:

L-Tryptophan;Tryptophan,L-;l-β-3-Indolylalanine;Tryptophane;Tryptophan;L-Tryptophane;1H-Indole-3-propanoic acid,α-amino-,(S)-;L-(-)-Tryptophan;l-α-Aminoindole-3-propionic acid;2-Amino-3-indolylpropanoic acid;(S)-α-Aminoindole-3-propionic acid;(-)-Tryptophan;1H-Indole-3-alanine,(S)-;EH 121;(S)-Tryptophan;(S)-α-Amino-1H-indole-3-propanoic acid;(S)-α-Amino-β-indolepropionic acid;3-Indol-3-ylalanine;L-Alanine,3-(1H-indol-3-yl)-;Lyphan;NSC 13119;(2S)-2-Amino-3-(1H-indol-3-yl)propanoic acid;(S)-2-Amino-3-(1H-indol-3-yl)propanoic acid;(2S)-2-Amino-3-(1H-indol-3-yl)propanoic acid;(2S)-2-Azaniumyl-3-(1H-indol-3-yl)propanoate;6912-86-3;80206-30-0;154635-35-5;2416148-24-6

CAS No.:

73-22-3

Molecular Formula:

C11H12N2O2

InChIKeys:

InChIKey=QIVBCDIJIAJPQS-VIFPVBQESA-N

Molecular Weight:

204.22500

Exact Mass:

204.23

EC Number:

200-795-6

UNII:

8DUH1N11BX

NSC Number:

757373

DSSTox ID:

DTXSID5021419

NCI Thesaurus Code:

C29603

Color/Form:

Leaflets or plates from dilute alcohol|White to slightly yellowish-white ... crystals or crystalline powder

ATC Code:

N - Nervous system

HScode:

2933990090

Categories:

Feed Additive

Characteristics

PSA:

79.11000

XLogP3:

-1.1

Appearance:

L-tryptophan is a white powder with a flat taste. An essential amino acid; occurs in isomeric forms. (NTP, 1992)

Density:

1.4±0.1 g/cm3

Melting Point:

282 °C

Boiling Point:

447.9°C at 760 mmHg

Flash Point:

224.7±25.9 °C

Refractive Index:

1.698

Water Solubility:

H2O: 13.4 mg/mL at 25 °C

Storage Conditions:

Protect from light

Vapor Pressure:

2.1X10-9 mm Hg at 25 deg C (est)

Toxicity:

LD508mmol / kg (rat, intraperitoneal injection). It is safe when used in food (FDA, §172.320, 2000).

Specific rotation:

Specific optical rotation: -31.5 deg at 23 °C/D (water, 1%), +2.4 deg at 20 °C/D (hydrochloric acid, 0.5 N); +0.15 deg at 20 °C/D (sodium hydroxide, 2.43% in 0.5 N)

Odor:

Odorless

Taste:

FLAT TASTE

PH:

A 1% solution in water has a pH of 5.5 to 7.

PKA:

7.38(at 25 °C)

Dissociation Constants:

7.38 (at 25 °C)|pK1 = 2.38 /SRC: carboxylic acid/; pK2 = 9.39 /SRC: primary amine/

Collision Cross Section:

154.22 Å² [M+H]+ [CCS Type: DT, Method: stepped-field]|158.58 Å² [M-H]- [CCS Type: DT, Method: stepped-field]|145 Å² [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|150.1 Å² [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|150.3 Å² [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|147.6 Å² [M+Na]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|147.7 Å² [M+Na]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|142.3 Å² [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|142.5 Å² [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|151.5 Å² [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|149.1 Å² [M-H]-

Experimental Properties:

Decomposes at 289 °C (rapid heating)|Needles from methanol, decomposes at 251 °C /Tryptophan hydrochloride/|UV: 3453 (Sadtler Research Laboratories Spectral Collection) /Tryptophan (DL)/

Air and Water Reactions:

Slightly soluble in water.

Reactive Group:

Salts, Acidic

Reactivity Profile:

Acidic salts, such as L-TRYPTOPHAN, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.

See More L-Tryptophan Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Protect from light

See More L-Tryptophan Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
HPMC,Lithium Carbonate,Cellulose Acetate Tow,EVA resin,Terpene Resin,PP fiber

Location:
Building 4, Feicui Building, No. 366 Xinshi North Road, Qiaoxi District, Shijiazhuang City, Hebei Province

Payment Terms:
TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
7 days

Total Annual Revenue:
$5 million-$10 million

Total Employees:
51-100

Year of Establishment:
2024

Hebei Shunxing Import and Export Co., Ltd. distributes and wholesales best-selling chemical products in the consumer market, enjoying a high position among consumers. The company has established long-term and stable cooperative relationships with multiple retailers and agents. The company was founded in 2012 and has a sales history of over 10 years. There are around 160 employees. Hebei Shunxing Import and Export Co., Ltd. operates a complete range of chemical products at reasonable prices. Our company has strong strength, values credit, abides by contracts, and guarantees product quality. With the characteristics of diversified business and the principle of small profits and quick sales, we have gained the trust of more and more customers. In today's increasingly transparent product prices, our company has won the trust of our customers with its thoughtful service and excellent product quality, and has established a mutually beneficial cooperative relationship with them. The company will continue to make friends from all walks of life in an honest and mutually beneficial manner, warmly welcoming friends from all walks of life。
The company's main products are HPMC, PM, MDEA, LAS60%, Tween (R) 80, EDTA,white oil and so on.Most of them belong to general organic chemicals

Inquiry History

28 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	L-Tryptophan (Vegan Only)	50.00 KG	Mar 24, 2026
India	L-Tryptophan powder	25.00 KG	Feb 13, 2025
Peru	L-Tryptophan	3000 KG	Sep 20, 2026
India	L Tryptophan	25.00 KG	Oct 30, 2025
United States	L-Tryptophan	1 MT	Apr 16, 2025
Egypt	L-Tryptophan	1000 KG	Jun 27, 2024
India	L- Tryptophan 98.5%	5.00 MT	Oct 16, 2025
Egypt	L-Tryptophan powder	100.00 KG	Oct 11, 2025
Greece	TRYPTOPHAN (Trp, W)	300.00 KG	Sep 25, 2025
India	L Tyrptophan	1.00 KG	Apr 25, 2025
United Kingdom	L-Tryptophan powder	15.00 MT	Nov 22, 2024
United States	L-Tryptophan Powder	10 MT	Oct 18, 2024
Russia	L-Tryptophan	25 KG	Sep 24, 2024
Slovenia	L-TRYPTOPHAN	400 G	Jan 9, 2026
India	L-Tryptophan	1 MT	Apr 23, 2025
United Kingdom	L-Tryptophan powder	1.00 20' Fcl	Apr 2, 2025
India	Sodium Hydroxide	100.00 KG	Feb 13, 2025
India	L-Tyrosine	25.00 KG	Feb 13, 2025
United Kingdom	L-Lysine MonoHCL	50.00 KG	Jun 12, 2025
India	Acetic acid/GAA	1.00 20' Fcl	Feb 26, 2024

Go to Page

Post an enquiry for this product

More Choices Find All Products for Sale 

Product Name	Grade / Content	Price	Supplier Name	Details
L-Tryptophan,	/99	$1/KG FOB	HANGZHOU TIANYE CHEMICALS CO., LTD	Inquiry
L-Tryptophan	USP/EP Grade/99	$26.5/KG EXW	DAHAI BIOCHEM LTD	Inquiry
Chinese manufacture PNQ supply health supplements Tryptophan	Chemical Grade/99	$10/UNIT EXW	Wuhan Pnq Int Trade Co., Ltd	Inquiry
L-Tryptophan \| CAS 73-22-3 \| Essential Amino Acid for Animal Feed, Food and Pharmaceutical Use	Feed Grade/98	$5-6/KG EXW	PREMIUM INGREDIENT CO.,LTD	Inquiry
Tryptophan (L-Tryptophane) CAS: 73-22-3	Feed Grade/99		SHANHAI YUKING+POVIDONE	Inquiry

Cheap Price L-Tryptophan Feed Grade for Animal Nutrition Hot!

Product Details

Seller Information

Inquiry History

Classification of the substance or mixture

GHS label elements, including precautionary statements

Other hazards which do not result in classification

Precautions for safe handling

Conditions for safe storage, including any incompatibilities

Related Products

More Choices Find All Products for Sale 

Related Searches

More from this Seller

Hot Related Products