The best replacement for iptg is lactose.

The best alternatives to iptg are rated as following:
★★★★★  lactose
★★★  allolactose
★  arabinose

Your alternative for iptg is not listed? Suggest!
Speaking about iptg, one probably shouldn't forget about tac promoter.

Other search terms related to iptg and their ratings are:
★★★★★ tac promoter
You have in mind a companion for iptg and it is not yet here? Propose!



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iptg
lactose
allolactose