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(S)-2-Amino-3-(3-indolyl)propionic Acid or L-α-Amino-3-indolepropionic Acid or L-Tryptophan USP IP BP EP Ph Eur Grade Supplier Exporter Manufacturers' Representative |
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L-Tryptophan
CAS Number: 73-22-3
Molecular Formula: C11H12N2O2
Molecular Weight: 204.23
L-Tryptophan
L-Tryptophan or (S)-2-Amino-3-(3-indolyl)propionic acid or L-α-Amino-3-indolepropionic acid is an amino acid, a protein building block. People use L-tryptophan for severe PMS symptoms and for quitting smoking. It is also used for athletic performance, depression, insomnia, and many other conditions.
Tryptophan USP Grade Specifications:
C11H12N2O2 204.23
l-Tryptophan CAS 73-22-3
UNII: 8DUH1N11BX
DEFINITION
Tryptophan contains NLT 98.5% and NMT 101.5% of C11H12N2O2, asl-tryptophan, calculated on the dried basis.
IDENTIFICATION
Infrared Absorption
ASSAY
Procedure:
Sample solution: Place 200 mg of Tryptophan in a 125-mL flask. Dissolve in a mixture of 3 mL of formic acid and 50 mL of glacial acetic acid.
Analysis: Titrate with 0.1 N perchloric acid, determining the endpoint potentiometrically. Perform a blank determination and make any necessary correction. Each mL of 0.1 N perchloric acid is equivalent to 20.42 mg of C11H12N2O2.
Acceptance criteria: 98.5%–101.5% on the dried basis.
IMPURITIES
Residue on Ignition: NMT 0.1%
Chloride and Sulfate, Chloride: A 0.73-g portion shows no more chloride than corresponds to 0.50 mL of 0.020 N hydrochloric acid (0.05%). [Note— Gently heat the sample preparation to dissolve, if necessary.]
Chloride and Sulfate, Sulfate: A 0.33-g portion shows no more sulfate than corresponds to 0.10 mL of 0.020 N sulfuric acid (0.03%). [Note— Gently heat the sample preparation to dissolve, if necessary.]
Iron: NMT 30 ppm.
Organic Impurities: to pass the tests by chromatography.
Optical Rotation, Specific Rotation: −29.4° to −32.8°
Sample solution: 10 mg/mL, in water. [Note— Heat gently to dissolve, if necessary.]
pH: 5.5–7.0, in a solution (1 in 100).
Loss on Drying: Dry a sample at 105° for 3 h: it loses NMT 0.3% of its weight.
We also supply L-Tryptophan EP BP Ph Eur Grade
Please visit SDS Safety Data Sheet of L-Tryptophan Suppliers.
American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.
Suppliers and Manufacturers' Representative:
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
Email: info@ammol.org