Schwartz Levitsky Feldman llp

CHARTERED ACCOUNTANTS

LICENSED PUBLIC ACCOUNTANTS

TORONTO · MONTREAL

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form F-1 of our report dated June 11, 2009 relating to the consolidated financial statements of Bontan Corporation Inc. appearing in the Company’s Annual Report on Form 20-F for the year ended March 31, 2009.

“SCHWARTZ LEVITSKY FELDMAN LLP”

Toronto, Ontario, Canada

February 25, 2010

Chartered Accountants

Licensed Public Accountants

1167 Caledonia Road

Toronto, Ontario M6A 2X1

Tel:  416 785 5353

Fax:  416 785 5663

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