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I ordered an oligomer at the usual scale, and this time I received 30% more (or less). Whats wrong with it?

April 26, 2017oligomer ordered received scale time usual wrong

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I ordered an oligomer at the usual scale, and this time I received 30% more (or less). Whats wrong with it?

1 Answer

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Posted

Nothing. The scale of synthesis is based on the nominal amount of starting material in the synthesis column at the start of synthesis. As it turns out, for most of the manufacturers of the columns and membranes the loading typically fluctuates by as much as 20-25%. If you receive an oligomer with a lower yield than usual, it doesn’t mean there is anything wrong. However, if you receive an oligomer with a suprisingly higher yield than expected give us the credit for superior synthesis.