1850
DOI: 10.1002/jlac.18500730105
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Ueber Papaverin

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Cited by 3 publications
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“…The papaverine HCl salt was only slightly soluble in cold water, while the noscapine HCl salt was highly soluble in cold water, so it can be removed by washing with cold water to afford papaverine as the hydrochloride salt. 117 Papaverine is used as a smooth muscle relaxant and a vasodilator. 56 Papaverine itself is not regulated, but if it is mixed with codeine or hydrocodone, then it is classified as a Schedule III drug by the DEA.…”
Section: Acs Chemical Neurosciencementioning
confidence: 99%
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“…The papaverine HCl salt was only slightly soluble in cold water, while the noscapine HCl salt was highly soluble in cold water, so it can be removed by washing with cold water to afford papaverine as the hydrochloride salt. 117 Papaverine is used as a smooth muscle relaxant and a vasodilator. 56 Papaverine itself is not regulated, but if it is mixed with codeine or hydrocodone, then it is classified as a Schedule III drug by the DEA.…”
Section: Acs Chemical Neurosciencementioning
confidence: 99%
“…The papaverine obtained this way was still contaminated with noscapine (narcotine), so it was treated with hydrochloric acid and allowed to crystallize. The papaverine HCl salt was only slightly soluble in cold water, while the noscapine HCl salt was highly soluble in cold water, so it can be removed by washing with cold water to afford papaverine as the hydrochloride salt …”
Section: Introductionmentioning
confidence: 99%