Separate a string into parts according to alpha or numeric characters used

I have an identifier attribute which can take different forms.

All contain a number, like 985 or B985 or 985a

Some are preceded by a capital letter like B985

Some are followed by a smallcaps letter or the character "*" like 985b or 985*

I want

• the capital letters at the beginning of the string to go into attribute PREFIX
• the numeric to go into attribute NUMBER
• the smallcaps letter or the * to go into attribute SUFFIX

I imagine using regex is the way. I have got the job partly done with a series of StringSearchers but I'd like to have advice from someone with experience.

Thanks in advance !