[sharbeldam]

Thank you
If you allow me another question because I don’t wanna open a new topic , I have this antibiotic flavipucin (if you can google it cause I can’t share pic), and it’s reacting with CH3OH/H+, it has double bond and epoxide which technically both can react with that, if the reaction is 1:1 , how do I know if methanol will react with epoxide or double bond?

[Meter]

One must look at differences in reactivity of said groups on the given molecule.

[sharbeldam]

Couldn’t find it. That’s why I asked for help

[Meter]

Couldn’t find it. That’s why I asked for help

Epoxides tend to be quite reactive due to ring strain.

[Babcock_Hall]

https://pubchem.ncbi.nlm.nih.gov/compound/Flavipucine#section=Structures
Flavipucine?  You could try using SciFinder and drawing out possible reactions.  There might be a more efficient way.