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Merck
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Key Documents

PHR1176

Supelco

Tryptophan

Pharmaceutical Secondary Standard; Certified Reference Material

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About This Item

Número de CAS:
EC Number:
UNSPSC Code:
41116107
eCl@ss:
32160406
NACRES:
NA.24

grade

certified reference material
pharmaceutical secondary standard

Quality Level

agency

traceable to Ph. Eur. T2610000
traceable to USP 1700501

API family

tryptophan

CofA

current certificate can be downloaded

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-30°C

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)

InChI key

QIVBCDIJIAJPQS-UHFFFAOYSA-N

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General description

Tryptophan is an essential amino acid and a precursor for the synthesis of serotonin (5-HT), a neuromodulator responsible for modulating sleep and appetite regulation.

Certified pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to in-house working standards.

Application

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
Tryptophan may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by spectrophotometric techniques.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP (PhEur) and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
Values of analytes vary lot to lot.

Footnote

To see an example of a Certificate of Analysis for this material enter LRAB2382 in the slot below. This is an example certificate only and may not be the lot that you receive.

Recommended products

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Certificados de análisis (COA)

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Visite la Librería de documentos

The use of carbon paste electrode in the direct voltammetric determination of tryptophan in pharmaceutical formulations
Fiorucci AR, et al.
Journal of Pharmaceutical and Biomedical Analysis, 28(5), 909-915 (2002)
Evolution of tryptophan and its foremost metabolites? concentrations in milk and fermented dairy products
Bertazzo A, et al.
PharmaNutrition, 4(2), 62-67 (2016)
Differential spectrophotometric determination of tyrosine and tryptophan in pharmaceutical amino acid solutions
Demeester J, et al.
Journal of Pharmaceutical Sciences, 67(5), 729-730 (1978)
Tryptophan supplementation modulates social behavior: a review
Steenbergen L, et al.
Neuroscience and Biobehavioral Reviews, 64, 346-358 (2016)
Saara Ahmad et al.
JPMA. The Journal of the Pakistan Medical Association, 63(1), 65-68 (2013-07-20)
To investigate the relationship between plasma tryptophan and the occurrence of memory dysfunctions in male and female type 1 diabetics. The case-control study was conducted at two urban healthcare facilities in Karachi from January to June 2009, and comprised 100

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