Thiosulfuricacid (H2S2O3), S-[2-[[(ethylamino)iminomethyl]amino]ethyl] ester (9CI); Thiosulfuricacid, S-ester with 1-ethyl-3-(2-mercaptoethyl)guanidine (8CI); Guanidine,1-ethyl-3-(2-mercaptoethyl)-, hydrogen sulfate (ester) (8CI)
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