Quotation from: Manual of SurgeryWritten by: Alexander Miles and Alexis Thomson |
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The second of these objects has been achieved by the researches of Ehrlich, who, in conjunction with his pupil, Hata, has built up a compound, the dihydrochloride of dioxydiamido-arseno-benzol, popularly known as salvarsan or "606." Other preparations, such as kharsivan, arseno-billon, and diarsenol, are chemically equivalent to salvarsan, containing from 27 to 31 per cent. of arsenic, and are equally efficient. The full dose is 0.6 grm. All these members of the "606" group form an acid solution when dissolved in water, and must be rendered alkaline before being injected. As subcutaneous and intra-muscular injections cause considerable pain, and may cause sloughing of the tissues, "606" preparations must be injected intravenously. Ehrlich has devised a preparation--neo-salvarsan, or "914," which is more easily prepared and forms a neutral solution. It contains from 18 to 20 per cent. of arsenic. Neo-kharsivan, novo-arseno-billon, and neo-diarsenol belong to the "914" group, the full dosage of which is 0.9 grm. As subcutaneous and intra-muscular injections of the "914" group are not painful, and even more efficient than intravenous injections, the administration is simpler.
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