Imisopasem manganese

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 201800

CAS#: 218791-21-0

Description: Imisopasem manganese , also known as M40403, or GC4419, is a manganese-based non-peptidyl mimetic of the human mitochondrial manganese superoxide dismutase (MnSOD), with potential antioxidant and chemo/radioprotective activities. Upon administration, imisopasem manganese mimics the activity of MnSOD and scavenges reactive oxygen species (ROS), such as superoxide anion, which prevents oxygen free radical damage to macromolecules such as DNA. This reduces ROS-mediated lipid peroxidation, prevents apoptosis and protects against oxygen free radical-induced toxicity in normal tissues.

Chemical Structure

Imisopasem manganese
CAS# 218791-21-0

Theoretical Analysis

MedKoo Cat#: 201800
Name: Imisopasem manganese
CAS#: 218791-21-0
Chemical Formula: C21H35Cl2MnN5
Exact Mass:
Molecular Weight: 483.38
Elemental Analysis: C, 52.18; H, 7.30; Cl, 14.67; Mn, 11.37; N, 14.49

Price and Availability

Size Price Availability Quantity
5.0mg USD 150.0 Same day
10.0mg USD 250.0 Same day
25.0mg USD 450.0 Same day
50.0mg USD 750.0 Same day
100.0mg USD 950.0 Same day
200.0mg USD 1450.0 Same day
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Synonym: M40403; M 40403; M-40403; CG4419; CG 4419; CG-4419; SC72325; SC-72325; SC 72325; Imisopasem manganese

IUPAC/Chemical Name: Manganese, dichloro[(4aR,13aR,17aR,21aR)-1,2,3,4,4a,5,6,12,13,13a,14,15,16,17,17a,18,19,20,21,21a-eicosahydro-11,7-nitrilo-7Hdibenzo[b,h][1,4,7,10]tetraazacycloheptadecine-κN5,κN13,κN18,κN21,κN22]-, (PB-7-11-2344'3')-.


InChi Code: InChI=1S/C21H35N5.2ClH.Mn/c1-3-10-20-18(8-1)22-12-13-23-19-9-2-4-11-21(19)25-15-17-7-5-6-16(26-17)14-24-20;;;/h5-7,18-25H,1-4,8-15H2;2*1H;/q;;;+2/p-2/t18-,19-,20-,21+;;;/m1.../s1

SMILES Code: [H][N@]1([C@H]2[C@H]3CCCC2)CC4=[N]5C(C[N]6([H])[C@H]7CCCC[C@H]7[N@@]([Mn]861(Cl)5Cl)([H])CC[N@@]38[H])=CC=C4

Appearance: white solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 483.38 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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 1: Thompson JS, Chu Y, Glass J, Tapp AA, Brown SA. The manganese superoxide dismutase mimetic, M40403, protects adult mice from lethal total body irradiation. Free Radic Res. 2010 May;44(5):529-40. PubMed PMID: 20298121.

2: Murphy CK, Fey EG, Watkins BA, Wong V, Rothstein D, Sonis ST. Efficacy of superoxide dismutase mimetic M40403 in attenuating radiation-induced oral mucositis in hamsters. Clin Cancer Res. 2008 Jul 1;14(13):4292-7. PubMed PMID: 18594012.

3: Cuzzocrea S, Mazzon E, Paola RD, Genovese T, Muià C, Caputi AP, Salvemini D. Effects of combination M40403 and dexamethasone therapy on joint disease in a rat model of collagen-induced arthritis. Arthritis Rheum. 2005 Jun;52(6):1929-40. PubMed PMID: 15934059.

4: Di Paola R, Mazzon E, Rotondo F, Dattola F, Britti D, De Majo M, Genovese T, Cuzzocrea S. Reduced development of experimental periodontitis by treatment with M40403, a superoxide dismutase mimetic. Eur J Pharmacol. 2005 Jun 1;516(2):151-7. PubMed PMID: 15921679.

5: Nicotera TM, Ding D, McFadden SL, Salvemini D, Salvi R. Paraquat-induced hair cell damage and protection with the superoxide dismutase mimetic m40403. Audiol Neurootol. 2004 Nov-Dec;9(6):353-62. Epub 2004 Oct 1. PubMed PMID: 15467288.

6: Di Filippo C, Cuzzocrea S, Marfella R, Fabbroni V, Scollo G, Berrino L, Giugliano D, Rossi F, D'Amico M. M40403 prevents myocardial injury induced by acute hyperglycaemia in perfused rat heart. Eur J Pharmacol. 2004 Aug 16;497(1):65-74. PubMed PMID: 15321736.

7: Jiang F, Guo Y, Salvemini D, Dusting GJ. Superoxide dismutase mimetic M40403 improves endothelial function in apolipoprotein(E)-deficient mice. Br J Pharmacol. 2003 Jul;139(6):1127-34. PubMed PMID: 12871831; PubMed Central PMCID: PMC1573947.

8: Marzocca C, Vannacci A, Cuzzocrea S, Salvemini D, Mannaioni PF, Masini E. Effects of the SOD mimetic, M40403, on prostaglandin production in an in vivo model of ischemia and reperfusion in rat heart. Inflamm Res. 2003 Apr;52 Suppl 1:S23-4. PubMed PMID: 12755394.

9: Samlowski WE, Petersen R, Cuzzocrea S, Macarthur H, Burton D, McGregor JR, Salvemini D. A nonpeptidyl mimic of superoxide dismutase, M40403, inhibits dose-limiting hypotension associated with interleukin-2 and increases its antitumor effects. Nat Med. 2003 Jun;9(6):750-5. Epub 2003 May 5. PubMed PMID: 12730689.

10: McFadden SL, Ding D, Salvemini D, Salvi RJ. M40403, a superoxide dismutase mimetic, protects cochlear hair cells from gentamicin, but not cisplatin toxicity. Toxicol Appl Pharmacol. 2003 Jan 1;186(1):46-54. PubMed PMID: 12583992.

11: Wang C, McInnis J, West JB, Bao J, Anastasio N, Guidry JA, Ye Y, Salvemini D, Johnson KM. Blockade of phencyclidine-induced cortical apoptosis and deficits in prepulse inhibition by M40403, a superoxide dismutase mimetic. J Pharmacol Exp Ther. 2003 Jan;304(1):266-71. PubMed PMID: 12490600.

12: Masini E, Cuzzocrea S, Mazzon E, Marzocca C, Mannaioni PF, Salvemini D. Protective effects of M40403, a selective superoxide dismutase mimetic, in myocardial ischaemia and reperfusion injury in vivo. Br J Pharmacol. 2002 Jul;136(6):905-17. Erratum in: Br J Pharmacol. 2002 Dec;137(8):1387. PubMed PMID: 12110615; PubMed Central PMCID: PMC1573411.

13: Salvemini D, Mazzon E, Dugo L, Serraino I, De Sarro A, Caputi AP, Cuzzocrea S. Amelioration of joint disease in a rat model of collagen-induced arthritis by M40403, a superoxide dismutase mimetic. Arthritis Rheum. 2001 Dec;44(12):2909-21. PubMed PMID: 11762952.

14: Cuzzocrea S, Mazzon E, Dugo L, Caputi AP, Riley DP, Salvemini D. Protective effects of M40403, a superoxide dismutase mimetic, in a rodent model of colitis. Eur J Pharmacol. 2001 Nov 30;432(1):79-89. PubMed PMID: 11734191.

15: Coppey LJ, Gellett JS, Davidson EP, Dunlap JA, Lund DD, Salvemini D, Yorek MA. Effect of M40403 treatment of diabetic rats on endoneurial blood flow, motor nerve conduction velocity and vascular function of epineurial arterioles of the sciatic nerve. Br J Pharmacol. 2001 Sep;134(1):21-9. PubMed PMID: 11522593; PubMed Central PMCID: PMC1572916.

16: Salvemini D, Mazzon E, Dugo L, Riley DP, Serraino I, Caputi AP, Cuzzocrea S. Pharmacological manipulation of the inflammatory cascade by the superoxide dismutase mimetic, M40403. Br J Pharmacol. 2001 Feb;132(4):815-27. PubMed PMID: 11181422; PubMed Central PMCID: PMC1572614.