CAS 334618-23-4

(R)-piperidin-3-amine dihydrochloride

Codes: LINA-008, ALOG-005

Application context (from source-drug indications)

Type 2 diabetesLinagliptinType 2 diabetesAlogliptin BenzoateDiabetesAlogliptin BenzoateAcute coronary syndromeAlogliptin Benzoate

Source drugs (routes using this intermediate)

Drug	Tier	Expiry
Linagliptin	Tier C — Watch / trade	2029
Alogliptin Benzoate	Tier 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.

LinagliptinOptimised routesteps: 3total yield: /

8-bromo-3-methyl-3,7-dihydro-1H-purine-2,6-dione→1-bromobut-2-yne→8-bromo-7-(but-2-yn-1-yl)-3-methyl-3,7-dihydro-1H-purine-2,6-dione→2-(chloromethyl)-4-methylquinazoline→8-bromo-7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione→(R)-piperidin-3-amine dihydrochloride

Alogliptin BenzoateOriginator routesteps: 8total yield: /

6-chloropyrimidine-2,4(1H,3H)-dione→(R)-tert-butyl (1-(3,5-dimethyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-7-yl)piperidin-3-yl)carbamate→2-((6-chloro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile→2-((6-chloro-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile→(R)-piperidin-3-amine dihydrochloride→(R)-2,5-diaminopentanoic acid hydrochloride→(R)-methyl 2,5-diaminopentanoate→(R)-3-aminopiperidin-2-one hydrochloride→(R)-piperidin-3-amine hydrochloride

Alogliptin BenzoateOptimised routesteps: 5total yield: /

6-chloro-3-methylpyrimidine-2,4(1H,3H)-dione→(R)-tert-butyl (1-(3,5-dimethyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-7-yl)piperidin-3-yl)carbamate→2-((6-chloro-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile→(R)-2-(piperidin-3-yl)isoindoline-1,3-dione→(R)-2-((6-(3-(1,3-dioxoisoindolin-2-yl)piperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile→(R)-piperidin-3-amine dihydrochloride→isobenzofuran-1,3-dione

Intermediates available on this site

Side-by-side comparison of all listed offers on this CAS; price bands are list-price ranges, final price subject to RFQ confirmation.

Supplier	Product	Price band	MOQ	Lead time	Qualifications	Action
Unibest Taizhou GMP-like Site	(R)-3-aminopiperidine dihydrochloride Pharmaceutical Intermediates	On request	On request	On request	—

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