The names of these seven sages are as follows: Citraketu, Suroci, Virajā, Mitra, Ulbaṇa, Vasubhṛdyāna and Dyumān. Some other very competent sons were born from Vasiṣṭha’s other wife.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
चित्रकेतुः सुरोचिश्च विरजा मित्र एव च । उल्बणो वसुभृद्यानो द्युमान् शक्त्यादयोऽपरे
citraketuḥ surociśca virajā mitra eva ca | ulbaṇo vasubhṛdyāno dyumān śaktyādayo'pare
SB 4.1.41