| 摘要 |
<p>1,188,054. Ethambutol preparation. SOC. FARMACEUTICI ITALIA. 25 June, 1968 [30 Oct., 1967], No. 30194/68. Heading C2C. Ethambutol and its salts are prepared by the following route (R, R<SP>1</SP> = C 1-3 alkyl, Ha = halogen), optionally followed by salt formation. The starting material and product in the first step and the products in the second and third steps are the dextrorotatory forms.</p> |
