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Stauprimide is a semi-synthetic analog of the staurosporine family of indolocarbazoles. It was first published in 1994 as part of an extensive structure-activity investigation to improve the selective inhibition of protein kinase C as a potential antitumor agent. More recently, stauprimide has been shown to increase the efficiency of the directed differentiation of mouse and human embryonic stem cells in synergy with defined extracellular signaling cues. Stauprimide interacts with NME2 (PUF) transcription factor to down-regulate c-Myc expression, leading to differentiation of stem cells.

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Streptamine is a cyclic diamino alcohol obtained by alkaline hydrolysis of streptomycin or streptidine.

SulfoMax HV

SulfoMax HV is a special purpose catalyst that is recommended for loading in passes before the intermediate absorption in DCDA plants. Its enhanced active ingredient offers improved conversion at higher SO3 environments. It can also improve conversion in Single absorption plants where there is no intermediate removal of SO3.

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SulfoMax RR

SulfoMax RR is an all-purpose catalyst used in the oxidation of sulfur dioxide to sulfur trioxide for the manufacture of sulfuric acid, be it from sulfur burning plants or metallurgical off-gas based plants or spent acid regeneration units. Its unique formulation in combination with a ‘Ribbed’ ring form provides better overall conversion. Its physical integrity benefits the user in terms of reduced screening losses year on year thereby offering increased life while maintaining activity.

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Sulfonamide is a sulfonyl group connected to an amine group. Sulfonamide is also the basis of several groups of drugs. Sulfonamide drugs were the first antibiotics to be used systemically, and paved the way for the antibiotic revolution in medicine. The first sulfonamide, trade-named Prontosil, was a prodrug.Sulfonamides are prepared by the reaction of a sulfonyl chloride with ammonia or an amine.

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