The "d" in d-tubocurarine refers to the configuration of the molecule. Stereoisomerism is a phenomenon in which molecules have the same molecular formula and connectivity but differ in the arrangement of atoms in space. In the case of d-tubocurarine, the "d" indicates that the molecule has a specific configuration known as dextro-rotatory.
The dextro-rotatory configuration refers to the orientation of the molecule's polarized light. When light is passed through a solution of the dextro-rotatory configuration, it rotates the plane of linearly polarized light clockwise. This indicates that the molecule's chiral centers are arranged in a specific way that causes this rotation.
It is important to note that the "d" in d-tubocurarine does not have any biological or physiological relevance; it simply denotes the configuration of the molecule.
in why we named structure of d-tubocurarine why we say d
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