The quotient rule is a formula for finding the derivative of a fraction. This page will show you how to take the derivative using the quotient rule. Type the numerator and denominator of your problem into the boxes, then click the button.he quotient rule is a formula for finding the derivative of a fraction. This page will show you how to take the derivative using the quotient rule. Type the numerator and denominator of your problem into the boxes, then click the button.
Thus, (CH 3 CO) 2 O is called acetic anhydride. Mixed (or unsymmetrical) acid anhydrides, such as acetic formic anhydride (see below), are known. One or both acyl groups of an acid anhydride may also be derived from another type of organic acid, such as sulfonic acid or a phosphonic acid.ixed (or unsymmetrical) acid anhydrides, such as acetic formic anhydride (see below), are known. One or both acyl groups of an acid anhydride may also be derived from another type of organic acid, such as sulfonic acid or a phosphonic acid.
The simplest acid anhydrides to describe are those in which R 1 = R 2 =  an alkane less the hydrogen atom at the end of the chain , where the hydrogen atom at the end of the corresponding alkane is replaced by the carbon atom to which that R (so, R 1 or R 2 in the diagram above) is attached. series of linear acid anhydrides is shown below with the molecular structure of each acid anhydride in the series drawn out in full (showing bond types but not accurate bond angles or, therefore, realistic molecular shapes).