ICI-118551 HCl

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

MedKoo CAT#: 510287

CAS#: 72795-01-8 (HCl)

Description: ICI-118551, also known as ICI-118,551, is a selective beta-2 (β2) adrenergic receptor antagonist. ICI-118551 binds to the β2 subtype with at least 100 times greater affinity than β1 or β3, the two other known subtypes of the beta adrenoceptor. The compound was developed by Imperial Chemical Industries, which was acquired by AkzoNobel in 2008. ICI-118,551 has no known therapeutic use in humans although it has been used widely in research to understand the action of the β2 adrenergic receptor, as few other specific antagonists for this receptor are known.

Price and Availability


USD 750
USD 3650

USD 1150
USD 4650

USD 2250
USD 6650

ICI-118551 HCl, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 510287
Name: ICI-118551 HCl
CAS#: 72795-01-8 (HCl)
Chemical Formula: C17H28ClNO2
Exact Mass:
Molecular Weight: 313.87
Elemental Analysis: C, 65.06; H, 8.99; Cl, 11.29; N, 4.46; O, 10.19

Related CAS #: 72795-01-8 (HCl)   72795-26-7 (free base)   91021-57-7 (racemic)    

Synonym: ICI118551; ICI 118551; ICI-118551; ICI118,551; ICI 118,551; ICI-118,551; ICI-118551 HCl.

IUPAC/Chemical Name: (2R,3R)-3-(isopropylamino)-1-((7-methyl-2,3-dihydro-1H-inden-4-yl)oxy)butan-2-ol hydrochloride


InChi Code: InChI=1S/C17H27NO2.ClH/c1-11(2)18-13(4)16(19)10-20-17-9-8-12(3)14-6-5-7-15(14)17;/h8-9,11,13,16,18-19H,5-7,10H2,1-4H3;1H/t13-,16+;/m1./s1

SMILES Code: C[C@@H](NC(C)C)[C@@H](O)COC1=CC=C(C)C2=C1CCC2.[H]Cl

Technical Data

white to off-white solid powder

>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).

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).

Harmonized System Code:

Additional Information



1: Moresco RM, Matarrese M, Soloviev D, Simonelli P, Rigamonti M, Gobbo C, Todde S, Carpinelli A, Kienle MG, Fazio F. Synthesis and in vivo evaluation of [11C]ICI 118551 as a putative subtype selective beta2-adrenergic radioligand. Int J Pharm. 2000 Aug 25;204(1-2):101-9. PubMed PMID: 11011992.

2: Hopkinson HE, Latif ML, Hill SJ. Non-competitive antagonism of beta(2)-agonist-mediated cyclic AMP accumulation by ICI 118551 in BC3H1 cells endogenously expressing constitutively active beta(2)-adrenoceptors. Br J Pharmacol. 2000 Sep;131(1):124-30. PubMed PMID: 10960078; PubMed Central PMCID: PMC1572294.

3: Quaglia MG, Farina A, Bossu E. Analysis of ICI 118551, a new beta 2 blocking drug, and related compounds by RP-HPLC-DAD. J Pharm Biomed Anal. 1992 Oct-Dec;10(10-12):1081-4. PubMed PMID: 1363686.

4: Jefferson D, Wharrad HJ, Birmingham AT, Patrick JM. The comparative effects of ICI 118551 and propranolol on essential tremor. Br J Clin Pharmacol. 1987 Dec;24(6):729-34. PubMed PMID: 2894217; PubMed Central PMCID: PMC1386396.

5: King DJ, Devaney NM, Gilbert JK. A double-blind placebo controlled trial of a selective beta 2 adrenoceptor antagonist (ICI 118551) in chronic anxiety. Int Clin Psychopharmacol. 1987 Jul;2(3):191-200. PubMed PMID: 3320184.

6: Tattersfield AE, Cragg DJ. Effect of ICI 118551 on bronchial beta-adrenoceptor function and exercise heart rate in normal man. Br J Clin Pharmacol. 1983 Dec;16(6):587-90. PubMed PMID: 6140938; PubMed Central PMCID: PMC1428330.