Clindamycin chemical formula?

What is clindamycin’s chemical formula?

Clindamycin (often listed as clindamycin hydrochloride in drug products) has the chemical formula C18H33ClN2O5S [1].

What formula is on clindamycin hydrochloride labels?

If you see “clindamycin hydrochloride” specifically, the commonly reported formula is still C18H33ClN2O5S [1] (the hydrochloride salt form is used clinically, but the formula above is the standard chemical formula reference).

Why might sources show different “clindamycin” formulas?

Some references distinguish between the free base and the hydrochloride salt and may list different molecular weight details even when the core clindamycin composition is the same. Most general drug listings use the formula C18H33ClN2O5S for clindamycin [1].

Sources

1. https://pubchem.ncbi.nlm.nih.gov/compound/Clindamycin