AHU-377 hemicalcium salt

Catalog No. size PriceQuantity
M6489-2 2mg solid $75
M6489-10 10mg solid $225


AHU-377 hemicalcium salt is angiotensin receptor neprilysin inhibitor being studied for use in combination with valsartan for heart failure. Sacubitril is a prodrug that is activated to LBQ657 by de-ethylation via esterases. LBQ657 inhibits the enzyme neprilysin, which is responsible for the degradation of atrial and brain natriuretic peptide, two blood pressure lowering peptides that work mainly by reducing blood volume.

Product information

CAS Number: 1369773-39-6

Molecular Weight: 861.04

Formula: C48H56CaN2O10


CZ 696

Related CAS Number:

149709-62-6 (free acid)

149690-05-1 (sodium)

Chemical Name: Calcium 4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5-ethoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate

Smiles: [Ca+2].C[C@H](C[C@@H](CC1C=CC(=CC=1)C1C=CC=CC=1)NC(=O)CCC([O-])=O)C(=O)OCC.C[C@H](C[C@@H](CC1C=CC(=CC=1)C1C=CC=CC=1)NC(=O)CCC([O-])=O)C(=O)OCC


InChi: InChI=1S/2C24H29NO5.Ca/c2*1-3-30-24(29)17(2)15-21(25-22(26)13-14-23(27)28)16-18-9-11-20(12-10-18)19-7-5-4-6-8-19;/h2*4-12,17,21H,3,13-16H2,1-2H3,(H,25,26)(H,27,28);/q;;+2/p-2/t2*17-,21+;/m11./s1

Technical Data

Appearance: Solid Power.

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

Solubility: Soluble in DMSO (10 mg/mL) and in ethanol (5mg/mL).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥360 days if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined.

HS Tariff Code: 382200

How to use

In Vitro:

Sacubitril (AHU-377) is a single molecule that is comprised of molecular moieties of valsartan, an ARB, and Sacubitril hemicalcium salt, a neprilysin inhibitor (1:1 ratio). Sacubitril (AHU-377) is converted by enzymatic cleavage of the ethyl ester into the active neprilysin inhibiting metabolite LBQ657. The inactive NEPi precursor, Sacubitril hemicalcium salt, does not inhibit collagen accumulation in fibroblasts nor cardiac myocyte hypertrophy. In cardiac fibroblasts, the active NEPi LBQ657 had no discernible effects. In contrast, LBQ657 modestly inhibits cardiac myocyte hypertrophy.

In Vivo:

In humans, Sacubitril (AHU-377)(tmax 0.5-1.1 h) are absorbed quickly. Sacubitril hemicalcium salt is converted rapidly into LBQ657 with its tmax being reached in 1.9-3.5 h. Mean t1/2 values for the biologically active LBQ657 is 9.9-11.1 h.In vehicle-treated dogs, ANF increases urinary sodium excretion from 17.3±3.6 to 199.5±18.4 pequivkglmin. This effect is potentiated significantly in animals which receive Sacubitril (AHU-377). Urinary volume is also potentiated in animals which receive an iv administration of Sacubitril (AHU-377).


  1. Fabris E, Merlo M, Rapezzi C, Ferrari R, Metra M, Frigerio M, Sinagra G. Sacubitril/Valsartan: Updates and Clinical Evidence for a Disease-Modifying Approach. Drugs. 2019 Sep;79(14):1543-1556. doi: 10.1007/s40265-019-01181-2. Review. PubMed PMID: 31432436.
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Products are for research use only. Not for human use.

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