9H-Pyrido[3,4-b]indole, β-Carboline
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level




light yellow

storage temp.


SMILES string




InChI key


Gene Information

human ... IKBKB(3551)
rat ... Gabra2(29706)

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Used as matrix for analysis of cyclodextrins and for sulfated oligosaccharides in combination with DHB as co-matrix.

Biochem/physiol Actions

Inhibitor of indoleamine 2,3-dioxygenase (IDO).

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

Eduard Dolušić et al.
Bioorganic & medicinal chemistry, 19(4), 1550-1561 (2011-01-29)
Indoleamine 2,3-dioxygenase (IDO) is a heme dioxygenase which has been shown to be involved in the pathological immune escape of diseases such as cancer. The synthesis and structure-activity relationships (SAR) of a novel series of IDO inhibitors based on the...
Reiko Ikeda et al.
European journal of medicinal chemistry, 46(2), 636-646 (2011-01-05)
β-carboline derivatives are known as the lead compounds for anti-tumor agents. To examine an optimal structure for anti-tumor activity, we synthesized a variety of β-carboline derivatives, possessing a variety of substituents on the nitrogen atom of the amino group of...
Binbin Xia et al.
European journal of medicinal chemistry, 43(7), 1489-1498 (2007-10-30)
Heuristic method (HM) and radial basis function neural network (RBFNN) methods were proposed to generate QSAR models for a set of non-benzodiazepine ligands at the benzodiazepine receptor (BzR). Descriptors calculated from the molecular structures alone were used to represent the...
Olga I Tarzi et al.
Journal of mass spectrometry : JMS, 44(2), 260-277 (2008-11-18)
The thermal stability of several commonly used crystalline matrix-assisted ultraviolet laser desorption/ionization mass spectrometry (UV-MALDI-MS) matrices, 2,5-dihydroxybenzoic acid (gentisic acid; GA), 2,4,6-trihydroxyacetophenone (THA), alpha-cyano-4-hydroxycinnamic acid (CHC), 3,5-dimethoxy-4-hydroxycinnamic acid (sinapinic acid; SA), 9H-pirido[3,4-b]indole (nor-harmane; nor-Ho), 1-methyl-9H-pirido[3,4-b]indole (harmane; Ho), perchlorate of nor-harmanonium...
Rosa Busquets et al.
Molecular nutrition & food research, 53(12), 1496-1504 (2009-10-08)
Heterocyclic amines (HCAs) are potent mutagens/carcinogens to which humans are frequently exposed through the consumption of cooked meat and fish food. The effect of normal intake of HCAs and their role in the aetiology of human cancer is unknown. To...
Glycosylation is known to have profound influence on various physiochemical, cellular and biological functions of proteins. Alterations in this modification are known to affect the immune system and have been associated with various pathological states such as cancer, rheumatoid arthritis, and inflammatory diseases.
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