This compound is an anticholinergic pharmaceutical active ingredient, consisting of a diphenyl-pyrrolidinyl-butynol moiety as the cation and a dihydrogen phosphate counterion. It is used as a raw material in the manufacture of pharmaceutical products targeting cholinergic pathways.
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.
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The international HS code for 1-(4-Hydroxy-4,4-diphenylbut-2-ynyl)pyrrolidinium dihydrogen phosphate (CAS 54118-66-0) 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.
dihydrogen phosphate;1,1-diphenyl-4-pyrrolidin-1-ium-1-ylbut-2-yn-1-ol
KJRDQHIYWCTNTN-UHFFFAOYSA-N
C1CC[NH+](C1)CC#CC(C2=CC=CC=C2)(C3=CC=CC=C3)O.OP(=O)(O)[O-]
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