Mixing a 10 to 20% solution of this substance and Eagle's minimal essential medium is commonly used to freeze stem cells.  
The Onyx embolic agent contains this substance mixed with ethylene vinyl alcohol copolymer. Mixing a 10 to 20% solution of this substance and Eagle's minimal essential medium is commonly used to freeze stem cells.  After being activated with a carbodiimide, this compound is used to activate primary and secondary alcohols in the Pfitzner-Moffatt oxidation. A derivative of this compound often shows a residual 2.50 ppm quintuplet peak; that very viscous deuterated "d6" derivative is often used instead of deuterated chloroform to dissolve NMR samples. Both oxalyl chloride and this substance are used to transform alcohols into aldehydes in a variety of the Corey-Kim reaction known as the (*) Swern oxidation. This compound is added to GC-rich templates to decrease their annealing temperature in PCR. This substance is created by reacting a byproduct of kraft pulping with oxygen or nitrogen dioxide. Upon touching the skin, this compound causes a taste of garlic in a person's mouth. For 10 points, name this substance made up of two methyl groups bonded to a sulfur double bonded to an oxygen, which is commonly used as a solvent.
The Onyx embolic agent contains this substance mixed with ethylene vinyl alcohol copolymer.
DMSO [or Dimethyl sulfoxide]