L(-)-Tryptophan | CAS:73-22-3 | Manufacturer ChemFaces

L(-)-Tryptophan

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According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.

Size /Price /Stock	10 mM * 1 mL in DMSO / $8.9 / In-stock
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Description:

Reference standards.

In vivo:

Neuropharmacology, 1976, 15(6):339-344.

Dose-response relationships between systemically administered l-tryptophan or l-5-hydroxytryptophan and raphe unit activity in the rat.[Reference: WebLink]

METHODS AND RESULTS:
In contrast to previous reports that l-5-hydroxytryptophan (l-5-HTP) is without effect on raphe unit activity, systemic administration of l-tryptophan（L(-)-Tryptophan） or l-5-HTP produced similar dose-dependent decreases in raphe unit activity, ranging from 0–15% at 10 mg/kg to 60–90% at 100 mg/kg doses. The dose-response curve forms a plateau for doses above 100 mg/kg of l-5-HTP or l-tryptophan. Neurochemical studies revealed that administration of varying doses of l-tryptophan or l-5-HTP (10–100 mg/kg, i.p.) under conditions simulating those of the unit recording procedure, produced dosedependent increases in forebrain serotonin of up to 42% and 353% for a 100 mg/kg dose of l-tryptophan or l-5-HTP, respectively.
CONCLUSIONS:
These data suggest that exogeneously administered l-5-HTP serves as an effective serotonin precursor in central serotonergic neurones. Furthermore, increases in forebrain serotonin levels within the range of normal diurnal variations dramatically depress raphe unit activity, indicating that diurnal changes in brain serotonin metabolism may significantly affect the activity of serotonin-containing neurones.

L(-)-Tryptophan Description

Source:
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage:	Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C). Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
After receiving:	The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.

Product Name	L(-)-Tryptophan
Price:	$30 / 20mg
CAS No.:	73-22-3
Catalog No.:	CFN70193
Molecular Formula:	C₁₁H₁₂N₂O₂
Molecular Weight:	204.2 g/mol
Purity:	>=98%
Type of Compound:	Alkaloids
Physical Desc.:	Powder
Source:
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download:	COA MSDS
Similar structural:	Comparison
Guestbook:

Size /Price /Stock	10 mM * 100 uL in DMSO / Inquiry / In-stock 10 mM * 1 mL in DMSO / Inquiry / In-stock
Related Libraries	Alkaloids Compound Library

	1 mg	5 mg	10 mg	20 mg	25 mg
1 mM	4.8972 mL	24.4858 mL	48.9716 mL	97.9432 mL	122.429 mL
5 mM	0.9794 mL	4.8972 mL	9.7943 mL	19.5886 mL	24.4858 mL
10 mM	0.4897 mL	2.4486 mL	4.8972 mL	9.7943 mL	12.2429 mL
50 mM	0.0979 mL	0.4897 mL	0.9794 mL	1.9589 mL	2.4486 mL
100 mM	0.049 mL	0.2449 mL	0.4897 mL	0.9794 mL	1.2243 mL

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