Do sprouts of broccoli rabe contain sulforaphane

Broccoli sprouts are one of the best, if not the the best, source of sulforaphane, apparently 100x more so than fully grown broccoli.

Unfortunately, most "broccoli" seeds sold in specialized shops and online are of broccoli rabe (Brassica rapa or ruvo), which is a distinct spieces from broccoli (Brassica oleracea) and actually a type of turnip.

Most packs of broccoli rabe seeds claim to be a source of sulforaphane, but if the two plants don't belong to the same same family, that's quite unlikely.

Does anyone know if sprouts of broccoli rabe are a source of sulforaphane?

Thanks