CAS 1032452-86-0

3-(2-chloropyrimidin-4-yl)-1-methyl-1H-indole

Codes: OSIM-004

Application context (from source-drug indications)

Non-small cell lung cancerOsimertinib Mesylate

Source drugs (routes using this intermediate)

Drug	Tier	Expiry
Osimertinib Mesylate	Tier A — Act now	2031

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.

Osimertinib MesylateOriginator routesteps: 7total yield: 4.9 g

1H-indole→2,4-dichloropyrimidine→3-(2-chloropyrimidin-4-yl)-1H-indole→3-(2-chloropyrimidin-4-yl)-1-methyl-1H-indole→4-fluoro-2-methoxy-5-nitroaniline→N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1-methyl-1H-indol-3-yl)pyrimidin-2-amine→N1,N1,N2-trimethylethane-1,2-diamine→N1-(2-(dimethylamino)ethyl)-5-methoxy-N1-methyl-N4-(4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)-2-nitrobenzene-1,4-diamine→N1-(2-(dimethylamino)ethyl)-5-methoxy-N1-methyl-N4-(4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)benzene-1,2,4-triamine→acryloyl chloride→methanesulfonic acid

Osimertinib MesylateOptimised routesteps: 7total yield: 20.5 g

2,4-dichloropyrimidine→3-(2-chloropyrimidin-4-yl)-1-methyl-1H-indole→4-fluoro-2-methoxy-5-nitroaniline→N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1-methyl-1H-indol-3-yl)pyrimidin-2-amine→N1,N1,N2-trimethylethane-1,2-diamine→N1-(2-(dimethylamino)ethyl)-5-methoxy-N1-methyl-N4-(4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)-2-nitrobenzene-1,4-diamine→N1-(2-(dimethylamino)ethyl)-5-methoxy-N1-methyl-N4-(4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)benzene-1,2,4-triamine→methanesulfonic acid→1-methyl-1H-indole→3-chloropropanoyl chloride→3-chloro-N-(2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)propanamide

Osimertinib MesylateOptimised routesteps: 5total yield: 190.5 mg

3-(2-chloropyrimidin-4-yl)-1-methyl-1H-indole→4-fluoro-2-methoxy-5-nitroaniline→N1,N1,N2-trimethylethane-1,2-diamine→acryloyl chloride→tert-butyl (4-fluoro-2-methoxy-5-nitrophenyl)carbamate→tert-butyl (4-((2-(dimethylamino)ethyl)(methyl)amino)-2-methoxy-5-nitrophenyl)carbamate→tert-butyl (5-amino-4-((2-(dimethylamino)ethyl)(methyl)amino)-2-methoxyphenyl)carbamate→N-(5-amino-2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxyphenyl)acrylamide

Intermediates available on this site

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Supplier	Product	Price band	MOQ	Lead time	Qualifications	Action
Unibest Taizhou GMP-like Site	3-(2-chloropyriMidin-4-yl)-1-Methylindole Pharmaceutical Intermediates	On request	On request	On request	—

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