≥95.0% (NT)

2-Amino-4-(2-aminophenyl)-4-oxobutyric acid, 2-Amino-3-(2-aminobenzoyl)propionic acid
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


≥95.0% (NT)


peptide synthesis: suitable


~235 °C (dec.)

SMILES string




InChI key


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1 g in glass bottle
250 mg in glass bottle

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 61250.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Asma Kazemi et al.
Clinical nutrition (Edinburgh, Scotland), 38(2), 522-528 (2018-05-08)
Disturbance in the equilibrium of the gut microbiota has been involved in the pathophysiology of depression. Probiotics have the potential to healthfully modulate the gut microbiome. Prebiotics could also be effective by stimulation of growth of some bacterial species in...
Soo Ching Lee et al.
Scientific reports, 8(1), 14277-14277 (2018-09-27)
We explored the gut microbiota profile among HIV-infected individuals with diverse immune recovery profiles following long-term suppressive ART and investigated the relationship between the altered bacteria with markers of immune dysfunction. The microbiota profile of rectal swabs from 26 HIV-infected...
László Vécsei et al.
Nature reviews. Drug discovery, 12(1), 64-82 (2012-12-15)
Various pathologies of the central nervous system (CNS) are accompanied by alterations in tryptophan metabolism. The main metabolic route of tryptophan degradation is the kynurenine pathway; its metabolites are responsible for a broad spectrum of effects, including the endogenous regulation...
Adam K Walker et al.
Molecular psychiatry, 24(10), 1523-1532 (2018-07-11)
Inflammation activates indoleamine 2,3-dioxygenase (IDO) which metabolizes tryptophan into kynurenine. Circulating kynurenine is transported into the brain by the large amino transporter LAT1 at the level of the blood-brain barrier. We hypothesized that administration of leucine that has a high...
Jatin Nandania et al.
Metabolites, 8(3) (2018-08-08)
The use of metabolomics profiling to understand the metabolism under different physiological states has increased in recent years, which created the need for robust analytical platforms. Here, we present a validated method for targeted and semiquantitative analysis of 102 polar...

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