Chemical Formulae

[prospero]

If you get involved with Research Chemicals it eventually becomes pretty much obligatory to have an understanding of the chemical formulae. With no background in chemistry I'm making reasonable progress in this, but there are a few minor questions which are bugging me andI wondered if you guys could help me out.


1) Shulgin seems to classify the 2C series according to the rule:


2C-X= 2,5-Dimethoxy-4,XXXXX phenethylamine


EXCEPT for


2C-B which is 4-bromo-2, 5-Dimethoxy phenethylamine


Why does helistthe 2C-B formula differently - he's normally pretty rigorous in these things?


2) Why is 2,5-Dimethoxy-4, methylphenethylamine called 2C-D and not 2C-M?


3) Other people completely re-order the components of the formulae of certain substances. eg I've seen 2C-D listed as 2-(4-methyl-2,5-dimethoxyphenyl)ethylamine (which incidentally also seems to havean extra '2' in it). Why is it acceptable to do this?


I'm slowly getting to grips with the names of these things but any help on the above queries would be great.