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Priority Table

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Priority table given below is in decreasing order i.e., COOH has the highest priority, SO3H has the 2nd highest and so on.

PRIORITY TABLE
COMPOUND NAME FORMULA
Carboxylic acid -COOH
Sulphonic acid -SO3H
Ester -COOR
Acid chloride -COCl
Acid amides -CONH2
Nitrile -CN
Aldehyde -CHO
Ketone >C=O
Alcohol -OH
Phenol -C6H6O
Thiols -SH
Amines -NH2
Ether -OR
Alkene >C=C<
Alkyne -C≡C-
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