L-Tryptophan suppliers
L-Tryptophan
- CAS:
- 73-22-3
- MF:
- C11H12N2O2
- MW:
- 204.23
Suppliers by country/region
- CHINA(489)
- United States(133)
- India(60)
- Japan(14)
- Thailand(12)
- Germany(26)
- United Kingdom(34)
- Canada(14)
- France(4)
- Slovakia(2)
- Europe(3)
- Hungary(2)
- Belgium(4)
- Switzerland(11)
- Ukraine(2)
- Egypt(1)
- Spain(6)
- South Korea(3)
- The Netherlands(3)
- Ireland(1)
- Poland(4)
- Mexico(1)
- Slovenia(1)
- Czech Republic(2)
- Italy(2)
- Brazil(1)
- Australia(1)
- Bangladesh(1)
- Indonesia(1)
Company Type
Properties
- Melting point:
- 289-290 °C (dec.)(lit.)
- Boiling point:
- 342.72°C (rough estimate)
- alpha
- -31.1 º (c=1, H20)
- Density
- 1.34
- bulk density
- 400kg/m3
- refractive index
- -32 ° (C=1, H2O)
- storage temp.
- 2-8°C
- solubility
- 20% NH3: 0.1 g/mL at 20 °C, clear, colorless
- form
- powder
- pka
- 2.46(at 25℃)
- color
- White to yellow-white
- PH
- 5.5-7.0 (10g/l, H2O, 20℃)
- Odor
- wh. cryst. or cryst. odorless powd., sl. bitter taste
- biological source
- non-animal source
- optical activity
- [α]20/D 31.5±1°, c = 1% in H2O
- Water Solubility
- 11.4 g/L (25 ºC)
- Specific Heat Capacity
- Cp(crystal): 1.17 J/(g·K), at 25℃
- Merck
- 14,9797
- BRN
- 86197
- Stability:
- Stable. Incompatible with strong acids, strong oxidizing agents.
- Cosmetics Ingredients Functions
- HAIR CONDITIONING
ANTISTATIC
FRAGRANCE
- InChI
- 1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)/t9-/m0/s1
- InChIKey
- QIVBCDIJIAJPQS-VIFPVBQESA-N
- SMILES
- N[C@@H](Cc1c[nH]c2ccccc12)C(O)=O
- LogP
- 0.704 (est)
- CAS DataBase Reference
- 73-22-3(CAS DataBase Reference)
- NIST Chemistry Reference
- L-Tryptophan(73-22-3)
- EPA Substance Registry System
- L-Tryptophan (73-22-3)
- Absorption
- cut-off at 326nm in 0.5 M HCl at 0.5M
Safety Information
- Symbol(GHS)
GHS05,GHS02
- Signal word
- Danger
- Hazard statements
- H314-H225-H290
- Precautionary statements
- P501-P240-P210-P233-P234-P243-P241-P242-P264-P280-P370+P378-P390-P303+P361+P353-P301+P330+P331-P363-P304+P340+P310-P305+P351+P338+P310-P403+P235-P406-P405
- Hazard Codes
- Xi
- Risk Statements
- 33-40-62-41-37/38-36/37/38-22
- Safety Statements
- 24/25-36/37/39-36-26
- WGK Germany
- 2
- RTECS
- YN6130000
- F
- 8
- TSCA
- TSCA listed
- HS Code
- 29339990
- Storage Class
- 11 - Combustible Solids
- Hazardous Substances Data
- 73-22-3(Hazardous Substances Data)
- Toxicity
- LD508mmol / kg (rat, intraperitoneal injection). It is safe when used in food (FDA, §172.320, 2000).
- REACH Registrations
- Active
Use
L-tryptophan, an essential aminoacid and precursor of serotonin, was introduced into medicine in 1963 for the treatment of depression and sleep disorders. Its effectiveness in these conditions has, however, never been convincingly demonstrated. It is also widely used in dietary supplements, parenteral nutrition preparations and dietary products for children with phenylketonuria. In 1989, reports from the USA showed an association between the consumption of L-tryptophan containing preparations and the development of eosiniphilia-myalgia syndrome (EMS), a condition characterized by intense eosinophilia, severe muscle and joint pain, swelling of the arms and legs, skin rashes and possible fever. Some of the reported cases have been fatal. Since it is not yet clear whether L-tryptophan itself or an unidentified contaminant is the cause of the EMS, many drug regulatory authorities have suspended the marketing authorization of products containing tryptophan pending further investigation, whereas others have withdrawn these products or restricted their use.
855 supplier list of "L-Tryptophan"
- Product Name:L-tryptophan
- Products Intro:Purity: 99% | Package: 1KG;15USD
- Company Type: Trader
- Country/Region: CHINA
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- Product Name:L-Tryptophan
- Products Intro:Purity: 98.5%-101.5%|Package: 1kg;|25kg;
- Company Type: Trader
- Country/Region: CHINA
- Main Products: Linoleic Acid,Vitamin B12,Riboflavin,β-Nicotinamide Mononucleotide,Amoxicillin trihydrate
- Product Name:L-tryptophan
- Products Intro:Purity: 99% | Package: 1g,10g,100g,500g,1kg,25kg,100kg,500kg
- Company Type: Trader
- Country/Region: CHINA
- Main Products: quinine series,urolithin a,Retinoic acid,Nicotinamide,Hyaluronic acid
- Product Name:L-Typtophan
- Products Intro:Purity: 0.99 | Package: 5KG;1KG,25Kg
- Company Type: Trader
- Country/Region: CHINA
- Main Products: Chloramphnicol,Heparin sodium,Bilirubin,Quinine,Pro-xylane
$5.00
- Product Name:L-Tryptophan
- Products Intro:Purity: 99%|Package: 1kg;5.00;USD
- Company Type: Trader
- Country/Region: CHINA
- Main Products: Rutile,PVA,Titanium dioxide,Pharmaceutical intermediates,Cobalt oxide
$1.40-33.00
- Product Name:L-Tryptophan
- Products Intro:Purity: 99% | Package: 1kg;33USD|1000kg;1.4USD
- Company Type: Trader
- Country/Region: CHINA
- Main Products: Electronic material intermediates,OLED,ppb grade Monomer,Pharmaceutical intermediates,KrF/ArF Monomer
- Product Name:L-Tryptophan
- Products Intro:Purity: 99%|Package: ≥1kg;$100.00/kg|≥50kg;$90.00/kg|≥100kg;$75.00/kg
- Company Type: Trader
- Country/Region: CHINA
- Main Products: Tirzepatide,Copper(II) phthalocyanine,1,4-Butanediol,Sodium hydroxide,Calcium hypochlorite
- Product Name:L-Tryptophan
- Products Intro:Purity: 98%(Min,HPLC) | Package: 100g;1kg;5kg,10kg,25kg,50kg
- Company Type: Trader
- Country/Region: CHINA
- Main Products: 1159983-30-8,89466-59-1,149739-51-5,104901-79-3,10541-83-0
- Product Name:(S)-(-)-Tryptophan
- Products Intro:Purity: 99% | Package: 25KG;5KG;1KG
- Company Type: Trader
- Country/Region: CHINA
- Product Name:L-Tryptophan
- Products Intro:Purity: USP BP EP FCC | Package: 1KG;5USD
- Company Type: Reagent
- Country/Region: CHINA