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CAS 141942-84-9

4-Cyano-3(R)-hydroxybutyric acid methyl ester

Codes: Atorvastatin-058

Application context (from source-drug indications)

Cardiac and vascular disordersAtorvastatin/Hydrochlorothiazide/Aspirin/EnalaprilHypertensionAtorvastatin/Hydrochlorothiazide/Aspirin/EnalaprilHyperlipidaemiaAtorvastatin/Hydrochlorothiazide/Aspirin/EnalaprilHeart diseaseAtorvastatin/Hydrochlorothiazide/Aspirin/EnalaprilHyperlipidaemiaAtorvastatin strontiumSubarachnoid haemorrhageAtorvastatin strontiumHypertensionAtorvastatin strontium

Source drugs (routes using this intermediate)

DrugTierExpiry
Atorvastatin/Hydrochlorothiazide/Aspirin/EnalaprilTier C — Watch / trade-
Atorvastatin strontiumTier C — Watch / trade-

Position in synthesis routes (up/downstream chain)

Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.

Atorvastatin/Hydrochlorothiazide/Aspirin/EnalaprilOptimised routesteps: 4total yield: 41.5g(Atorvastatin-047)
4-Cyano-3(R)-hydroxybutyric acid methyl ester→3(R)-[tert-Butyl(dimethyl)silyloxy]-4-cyanobutyric acid methyl ester→(3R)-3-[[tert-Butyl(dimethyl)silyl]oxy]-4-cyanobutanoic acid→3(R)-[tert-Butyl(dimethyl)silyloxy]-5-hydroxypentanenitrile→5-Amino-3(R)-[tert-butyl(dimethyl)silyloxy]pentan-1-ol
Atorvastatin strontiumOptimised routesteps: 4total yield: 41.5g(Atorvastatin-047)
4-Cyano-3(R)-hydroxybutyric acid methyl ester→3(R)-[tert-Butyl(dimethyl)silyloxy]-4-cyanobutyric acid methyl ester→(3R)-3-[[tert-Butyl(dimethyl)silyl]oxy]-4-cyanobutanoic acid→3(R)-[tert-Butyl(dimethyl)silyloxy]-5-hydroxypentanenitrile→5-Amino-3(R)-[tert-butyl(dimethyl)silyloxy]pentan-1-ol

Intermediates available on this site

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This is a CAS-level registry record: registrations across routes are merged. Supplier offers and buyer demands will be matched on this CAS as the primary key.