Cayman Chemical Item Number 13347

Isobutylmethylxanthine; 1-Methyl-3-Isobutylxanthine; NSC 165960 (CAS 28822-58-4)

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IBMX is a widely-used non-specific inhibitor of cyclic AMP and cyclic GMP phosphodiesterases (PDEs) (IC50 = 19, 50, 18, 13, 32, 7, and 50 μM for PDE1, PDE2, PDE3, PDE4, PDE5, PDE7, and PDE11, respectively). PDE8A, PDE8B, and PDE9 are insensitive to IBMX.1 By inhibiting PDEs, IBMX increases cellular cAMP and cGMP levels, activating cyclic-nucleotide-regulated protein kinases. Methylxanthines, including IBMX, caffeine, and theophylline, bind adenosine receptors, typically antagonizing the suppressive effects of natural agonists.2

1. Fawcett, L., Baxendale, R., Stacey, P., et al. Molecular cloning and characterization of a distinct human phosphodiesterase gene family: PDE11A. Proc Natl Acad Sci USA 97(7) 3702-3707 (2000).

2. Snyder, S.H., Katims, J.J., Annau, Z., et al. Adenosine receptors and behavioral actions of methylxanthines. Proc Natl Acad Sci USA 78(5) 3260-3264 (1981).

  • Isobutylmethylxanthine
  • 1-Methyl-3-Isobutylxanthine
  • NSC 165960
Formal Name 3,​9-​dihydro-​1-​methyl-​3-​(2-​methylpropyl)-​1H-​purine-​2,​6-​dione
CAS Number 28822-58-4
Molecular Formula C10H14N4O2
Formula Weight 222.3
Formulation A crystalline solid
Purity ≥98%
Stability 2 years
Storage -20°C
Shipping Room temperature in continental US; may vary elsewhere
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Size Price Quantity Subtotal
50 mg $16.00 $0.00
100 mg $29.00 $0.00
250 mg $64.00 $0.00
500 mg $96.00 $0.00
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Cart Total $0.00

Pricing updated 2015-08-03. Prices are subject to change without notice.

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Warning This product is not for human or veterinary use.

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Cayman Chemical was formed over thirty years ago by demonstrating the value of naturally growing gorgonian corals as a renewable, economically viable source of prostaglandins. Today we operate our business knowing that we owe our start to the renewable resources our environment had provided. As Cayman Chemical continues to grow we consistently evaluate our business processes to ensure we are operating at the highest environmental standards.

Cayman Chemical

1180 East Ellsworth Road

Ann Arbor, Michigan 48108 USA


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