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L Tryptophan

Name: L Tryptophan
Brand: Dideu
SKU: pr2510311740
Price: 40 USD
Availability: InStock

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CAS No.:

73-22-3

Grade:

Industrial Grade

Content:

99%

Brand:

Dideu

Packaging:

25kg/drum

Price valid (until):

2025-12-01

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Shaanxi Dideu Medichem Co. Ltd

Company Type:

Manufactory

Location:

China

Payment Terms:

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

Average Lead Time:

7 days

Qualification:

Main Products:

Chemical Pesticides,Food Additives,Agrochemicals,Active Pharm Ingredients,Flavors and Fragrances,Chemical Catalyst

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Product Description
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Inquiry History

Description

L-Tryptophan is an essential amino acid that is necessary for making proteins.

Need COA ? Please contact 1010@dideu.com

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a) Free sample can be supplied.

b) Guide our clients by professional knowledge and teach them how to use our product after sales.

c) Accept SGS, BV any other third-party inspection before loading.

d) High quality best price Guaranteed.

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Why do you choose Dideu as your partner?

A) High quality can be guaranteed. Dideu since 1975 are reputed chemical manufacturer and are Certified by ISO 9001;2015 and have GMP certification.Free sample can be arranged before shipment and SGS,BV and other third party inspection company are accepted before loading.For regular customers, we accept L/C 180 Days, D/P, D/A payment term. If there is any quality problem after goods arrive. Dideu will do fully payment refund.

B) Best price can be guaranteed. As Dideu are integrated pharmaceuticals and chemicals producer, the production cost can be controlled and price will be definitely more competitive than China trading companies.

C) Professional engineers from Dideu will give professional usage guide and services after sales.

D)Dideu work 7×24 hours and your request will be processed by our professional staff in different shift period.

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Dideu is one of the largest producer for general chemical, pharmaceutical, nutrition additive, natural extracts, agrochemical and Daily-Use Chemical in China and is headquartered in Shaanxi, China. The Dideu Group comprises subsidiaries and joint ventures in more than 10 countries and operates six integrated production sites and 21 other production sites in Europe, Asia, Australia, Americas and Africa. Its headquarters is located in Xi’An,China. Dideu has customers in over 200 countries and supplies products to a wide variety of industries.

At the end of 2014, the company employed more than 13000 people. In 2014, Dideu Group posted sales of 30 billion and income from operations before special items of about 7.5 billion. The company is currently expanding its international activities with a particular focus on Asia countries. Between 1990 and 2005, the company invested 5.2 billion in Asia, for example in sites near Guangxi,Yunnan, Sichuan, Shaanxi China, Mangalore in India,Bangkok, Thailand,Hanoi, Vietnam etc.

Dideu Consist Of Five Industry Chains:

1）Pharmaceutical Industries
2）Nutrition Additive Industries
3）Daily-Use Chemical Products Industries & Agrochemicals
4）Environmental Friendly Chemical And Chemurgy Industries
5）Petrochemical Industries
6）General Chemical Industry

At Dideu, we redefine chemistry to make the world better - and have been doing so for 75 years. As one of the world's leading chemical company, we combine economic success with environmental protection and social responsibility. Through science and innovation we enable our customers in nearly every industry to meet the current and future needs of society.

At Dideu, we create chemistry for a sustainable future with science for a better life. Dideu is a Life Science company with a long and glorious history and core competencies in the areas of health care and agriculture. With our innovative products, we are contributing to finding solutions to some of the major challenges of our time. The growing and increasingly aging world population requires improved medical care and an adequate supply of food. Dideu is improving people's quality of life by preventing, alleviating and treating diseases. And we are helping to provide a reliable supply of high quality food, feed and plant based raw materials. We develop new molecules for use in innovative products and solutions to improve health. Our research and development activities are based on a profound understanding of the biochemical processes in living organisms. Our goal is to achieve and sustain leadership positions in our markets, thus creating value for our customers, stockholders and employees. To this end, our strategy is designed to help solve some of the most pressing challenges facing humankind, and by doing this exceptionally well we aim to strengthen the company's earning power.

We are committed to operating sustainably and addressing our social and ethical responsibilities as a corporate citizen, while at the same time respecting the interests of all our stakeholders. Employees with a passion for innovation enjoy excellent development opportunities at Dideu. Exclusive Focus on the Life Science Businesses Following the economic and legal independence of our former Material Science subgroup. Dideu has charted the course for its successful development as a Life Science company. Our Life Science businesses hold leading positions in innovation driven growth markets. Together they make up a strong, attractive and balanced portfolio that is resistant to fluctuations in demand and to potential risks.The previous structure comprising a strategic management holding company and operational subgroups has thus been replaced by an integrated organization under the umbrella of the strong Dideu brand. The company's operations are managed in three divisions Pharmaceuticals, Consumer Health and Crop Science and the Animal Health business unit. The business continues to be supported by the corporate functions, Dideu Business Services and the service company Current, while Technology Services is being integrated into Dideu Group, forming the Engineering and Technology function.

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.

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:

Carboxylic Acids and Derivatives

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.

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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:
Manufactory

Main Products:
Chemical Pesticides,Food Additives,Agrochemicals,Active Pharm Ingredients,Flavors and Fragrances,Chemical Catalyst

Location:
https://www.dideu.com/en/

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

Average lead Time:
7 days

Total Annual Revenue:
Above $100 million

Total Employees:
Above 1000

Year of Establishment:
2016

Company Certificates
- ISO Certificate
- REACH
Company Profile
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Inquiry History

32 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
India	L-Tryptophan powder	1.00 MT	Sep 27, 2023
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
Spain	Tryptophan, feed additives	25 MT	Sep 25, 2023
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	Glycine	1.00 MT	Sep 26, 2023
India	L-Tyrosine	25.00 KG	Feb 13, 2025

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L Tryptophan

Product Description

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

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