Sertraline should not be taken with or within two weeks of taking monoamine oxidase inhibitors (MAOIs). These include phenelzine (NardilÂ®), tranylcypromine (ParnateÂ®), isocarboxazid (MarplanÂ®), rasagiline (AzilectÂ®), and selegiline (EmsamÂ®).
Pure caffeine is a white, tasteless substance that makes up as much as 5% of. the weight of tea leaves. By structure, caffeine is closely related to the purine bases, guanine and adenine, found in deoxyribonucleic acids (DNA).
UV spectrum was run for this. solution and a maximum absorption of 275nm was. obtained similar to the standard caffeine spectrum. (Figs.2and3). Purines give sharp absorption at 270nm, but in. caffeine the absorption is shifted into 275nm, due to. substitution of three methyl groups on three nitrogen. atoms.