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CAS 1449598-86-0

2-chloro-7-fluoro-4H-pyrido[1,2-a]pyrimidin-4-one

Codes: RISD-008

Application context (from source-drug indications)

Spinal muscular atrophyRisdiplam

Source drugs (routes using this intermediate)

DrugTierExpiry
RisdiplamTier B — Position early-

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.

RisdiplamOptimised routesteps: 7total yield: 12 mg (Risdiplam)
3,6-dichloro-4-methylpyridazine→6-chloro-5-methylpyridazin-3-amine→6-chloro-4-methylpyridazin-3-amine→1-bromo-2,2-dimethoxypropane→6-chloro-2,8-dimethylimidazo[1,2-b]pyridazine→4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(1,3,2-dioxaborolane)→2,8-dimethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine→2-chloro-7-fluoro-4H-pyrido[1,2-a]pyrimidin-4-one→2-(2,8-dimethylimidazo[1,2-b]pyridazin-6-yl)-7-fluoro-4H-pyrido[1,2-a]pyrimidin-4-one→4,7-diazaspiro[2.5]octane hydrogen chloride→5-fluoropyridin-2-amine→dimethyl malonate→7-fluoro-2-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one

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.

SupplierProductPrice bandMOQLead timeQualificationsAction
Qualified Partner — East China API Works7-fluoro-2-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one
Pharmaceutical Intermediates
On requestOn requestOn request
—
Unibest Nantong cGMP Site4-Boc-4,7-diazaspiro[2.5]octane
Pharmaceutical Intermediates
On requestOn requestOn request
—
Unibest Taizhou GMP-like Site2,8-Dimethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine
Pharmaceutical Intermediates
On requestOn requestOn request
—

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.