Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
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3-Chloro-10,11-dihydro-5H-benzo[d]naphtho[2,3-b]pyran-8(9H)-one
pharmaceutical intermediate
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This compound is a protected amino acid derivative featuring a pyrrolidine ring with a methoxymethyl substituent. It is primarily used as a pharmaceutical intermediate in the synthesis of Velpatasvir, an antiviral agent.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
The international HS code for (2S,4S)-1-(tert-butoxycarbonyl)-4-(methoxymethyl)pyrrolidine-2-carboxylic acid (CAS 1378388-16-9) is 2933.99.
2933.99
2933 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
(2S,4S)-4-(methoxymethyl)-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidine-2-carboxylic acid
OHPUCEUCBHBIAW-IUCAKERBSA-N
CC(C)(C)OC(=O)N1C[C@H](C[C@H]1C(=O)O)COC
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