Cellulose acylate film, retarder, polarizing plate, and liquid crystal display devices

A cellulose acylate film comprising at least one cellulose acylate, at least one sterol derivative represented by formula (1), and at least one saccharide derivative and/or at least one oligomer plasticizer:

• wherein
• each of R1, R2 and R3 represents a hydrogen atom, a hydroxyl group or a substituent represented by -L-R*, provided that at least one of R1, R2 and R3 represents the substituent represented by -L-R*;
• L represents a single bond or a divalent connecting group selected from the group consisting of —O—, —CO—, —CONR6—, —CH2— and a combination thereof, wherein R6 represents an alkyl group having from 1 to 7 carbon atoms or a hydrogen atom;
• R* represents a substituted or unsubstituted aromatic ring group, heterocyclic group or alkyl group, provided that in the alkyl group, one CH2 or two or more CH2's which are not adjacent to each other may be substituted with an oxygen atom;
• R4 represents a carboxyl group or —CHR7—CH(CH3)2, wherein R7 represents an alkyl group having 1 or 2 carbon atoms or a hydrogen atom, and the carboxyl group represented by R4 may be substituted with -L-R*;
• R5 represents a hydrogen atom or a methyl group;
• and a combination of the broken line and the solid line in the formula may be any of a single bond or a double bond.