Codeine, TMS

In spite of the fact that a number of alkaloids can be analysed by GC in the free state, in some instances strong adsorption on the column and tailing peaks occur and derivati-zation is required [537]. Martin and Swinehardt [538] converted morphine and codeine into TMS derivatives by treatment with a TMCS—HMDS mixture in pyridine (1 1 3). 

Simonyan K, Saad ZS, Loucks TM, Poletto CJ, Ludlow CL (2007) Eunctional neuroanatomy of human voluntary cough and sniff production. Neuroimage 37 401 09 Smith J, Owen E, Earis J, Woodcock A (2006) Effect of codeine on objective measurement of cough in chronic obstmctive pulmonary disease. J AUergy CUn Immunol 117 831-835 Smith MB, Eeldman W (1993) Over-the-counter cold medications. A critical review of clinical trials between 1950 and 1991. J Am Med Assoc 269 2258-2263... 

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