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Wuhan Grand Hoyo Co.,Ltd
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Wuhan Grand Hoyo Co., Ltd. is the leading Amino acid manufacturer in China. Products are widely used in the fields of pharmaceutical, food additive, feed additive, nutrition, chemical and some so on. The facility is approved and regularly audited by Merck, Zambon, Sanofi, Nestle and authorities of US FDA, EU GMP (BGV German). All the production is strictly under cGMP management Its “WUBC” and “WHUHOYO” are world-famous brands in the world market of Amino acid.
Our strong APIs are Acetylcysteine, Carbocisteine, Cysteine HCL monohydrate and Acetyltyrosine.
Our strong Amino Acid products are Cysteine series, Cysteine HCL monohydrate, Cysteine HCL anhydrous and Cysteine base. L-Citrulline, L-Serine
Miss Alice Zhang
Wuhan Grand Hoyo Co., Ltd.
Mobile: 0086-27-13871249540
Tel: 0086-27-87452860
Email: minabc777@163.com
Skype: Alice Zhang
Web: www.grandhoyo.com
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Send Inquiry
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SHANGHAI PASSIONO INT'L CO., LTD.
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Product name: L-Tryptophan
Description: White or yellow slightly crystalline powder
Structure:
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L-Tryptophan
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IUPAC name
Tryptophan or (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
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Other names
2-Amino-3-(1H-indol-3-yl)propanoic acid
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Identifiers
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CAS number
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73-22-3
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PubChem
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6305
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ChemSpider
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6066
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UNII
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8DUH1N11BX
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ChEMBL
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CHEMBL54976
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IUPHAR ligand
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717
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ATC code
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N06AX02
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Properties
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Molecular formula
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C11H12N2O2
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Molar mass
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204.23 g mol−1
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Solubility inwater
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Soluble: 0.23 g/L at 0 °C,
11.4 g/L at 25 °C,
17.1 g/L at 50 °C,
27.95 g/L at 75 °C
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Solubility
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Soluble in hot alcohol, alkali hydroxides; insoluble in chloroform.
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Acidity (pKa)
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2.38 (carboxyl), 9.39 (amino)
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Product function:
L-Tryptophan is a naturally occurring amino-acid. It is a precursor for the mood-regulating serotonin the brain neurotransmitter linked with pleasure and fulfilment. L-Tryptophan's is used to alleviate depression, support alcohol withdrawal and to aid weight loss. It plays an important role in our diets, and aging individuals are often in need of it as a supplement.
Specification:
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Test Items
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PECIFICATION
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Description:
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White or yellow slightly
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Specific Rotation:
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–30.50 to –32.5degree
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PH:
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5.5~6.4
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Chloride (Cl):
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0.05% Max
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Sulfate:
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NMT0.03%
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Heavy Metals:
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NMT 0.0015%
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Arsenic:
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NMT1ppm
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Iron:
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NMT 0.003%
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Loss on drying:
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NMT 0.3%
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Residue on Ignition:
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NMT 0.1%
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Assay:
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99.0-101.0%
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Pharma Sources Insight January 2025
