CH3-.....-CH2- CH2- CH2- CH2- CH2- COOH
C6 C5 C4 C3 C2 C1
Using Greek alphabet and Numbers.
Carbon 1 is the one with the carboxyl group
Carbon alpha is carbon 2 (and then follow the greek alphabet)
In case you need it , the last carbon is always Omega, the last letter of the greek alphabet (May be you know this quote: "I am Alpha and Omega, the beginning and the end...")
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