Last month, Luca set the upper limit of its flotation range at $110.5m.

Luca Technologies, a US-based company focused on gasification of in-ground coal, shale and oil reserves and backed by ASF and BASF’s corporate venturing units, has withdrawn its plans to float.

Last month, Luca set the upper limit of its flotation range at $110.5m.

Luca had been trying to sell 8.5 million shares at between $11 per share and $13 per share. It has also granted its underwriters "a green shoe" of 1.275m shares, according to the company’s securities and exchange…