ORGLIST:The same chemical structure, but different CAS#, why?

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From: Jiang Heng (hjiang78$##$hotmail.com)
Date: Sat Nov 08 2003 - 21:33:26 EST

Hello, everybody,

The following substance is the same structure, but different CAS#, who can
tell me WHY?
CAS 124-76-5 (isoborneol)
CAS 507-70-0 (borneol)
CAS 464-45-9 (bicyclo[2.2.1]heptan-2-ol, 1,7,7-trimethyl)

see the attach file for the chemical structure.

Thanks

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