Adenine riboside, Adenine-9-β-D-ribofuranoside, 9-β-D-Ribofuranosyladenine
Empirical Formula (Hill Notation):
CAS Number:
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PubChem Substance ID:
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Quality Level




234-236 °C (lit.)

storage temp.


SMILES string




InChI key


Gene Information

human ... ADA(100), ADORA1(134), ADORA2A(135), ADORA2B(136), ADORA3(140), ERBB2(2064), ERBB4(2066)
rat ... Adcy2(81636), Adora1(29290), Adora2a(25369), Adora3(25370)

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General description

In the extracellular space, ecto-5′-nucleotidase (CD73) dephosphorylates adenosine triphosphate (ATP) to produce adenosine. Adenosine has four receptors namely A1R, A2AR A2BR and A3R. Adenosine plays a key role in the osteogenic differentiation. A1R induces osteoclast differentiation and A2AR induces osteoblast differentiation.


Adenosine has been used:
  • as a supplement in embryonic type culture medium for in vitro osteogenic differentiation
  • for evaluation of its effect on cell survival by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT assay) and cell proliferation by 3H-thymidine incorporation assay in multi drug resistant glioblastoma stem-like cells (GSCs), and as a standard in high performance liquid chromatography (HPLC).
  • as a constituent in collagenase solution for the collagenase digestion of mice fat tissue.


1, 5, 25, 100 g in poly bottle

Biochem/physiol Actions

Endogenous neurotransmitter at adenosine receptors. Cardioprotective effects may relate to activation of A1 adenosine receptors. The antiplatelet and anti−inflammatory actions of adenosine appear to be mediated via the A2 adenosine receptor. In contrast, adenosine appears to be a pro-inflammatory mediator in asthma and chronic obstructive pulmonary disease (COPD).

Features and Benefits

This compound is featured on the Adenylyl cyclases and Phosphoinositide Kinases pages of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.
This compound is a featured product for Cyclic Nucleotide research. Click here to discover more featured Cyclic Nucleotide products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

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

Feeder-dependent and feeder-independent iPS cell derivation from human and mouse adipose stem cells
Sugii S, et al.
Nature Protocols, 6(3), 346-346 (2011)
TGF beta-induced osteogenic potential of human amniotic fluid stem cells via CD73-generated adenosine production
Hau KL, et al.
Scientific Reports, 7(1), 6601-6601 (2017)
Adenosine A3 receptor elicits chemoresistance mediated by multiple resistance-associated protein-1 in human glioblastoma stem-like cells
Torres A, et al.
Oncotarget, 7(41), 67373-67373 (2016)
Jeffrey Buter et al.
Nature chemical biology, 15(9), 889-899 (2019-08-21)
Mycobacterium tuberculosis (Mtb) is the world's most deadly pathogen. Unlike less virulent mycobacteria, Mtb produces 1-tuberculosinyladenosine (1-TbAd), an unusual terpene nucleoside of unknown function. In the present study 1-TbAd has been shown to be a naturally evolved phagolysosome disruptor. 1-TbAd...
Dominik Eichin et al.
PloS one, 10(8), e0134721-e0134721 (2015-08-11)
The ectoenzyme CD73 catalyzes the hydrolysis of AMP, and is one of the most important producers of extracellular adenosine. On regulatory T cells, CD73 is necessary for immunosuppressive functions, and on Th17 cells CD73-generated adenosine exerts anti-inflammatory effects. However, the...
Related Content
Cyclic nucleotides, including cyclic AMP (cAMP), cyclic GMP (cGMP) and cyclic ADP-ribose, have been extensively studied as second messengers of intracellular events initiated by activation of GPCRs. cAMP modifies cell function in all eukaryotic cells, principally through the activation of cAMP-dependent protein kinase (PKA), but also through cAMP-gated ion channels and guanine nucleotide exchange factors directly activated by cAMP.
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