SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM T-1

STATEMENT OF ELIGIBILITY

UNDER THE TRUST INDENTURE ACT OF 1939

OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

U.S. BANK NATIONAL ASSOCIATION

(Exact name of Trustee as specified in its charter)

31-0841368

I.R.S. Employer Identification No.

David W. Ferrell

U.S. Bank National Association

1349 W. Peachtree Street, N.W.

Suite 1050

Atlanta, GA 30309

(404) 898-8821

(Name, address and telephone number of agent for service)

RETROPHIN, INC.

(Issuer with respect to the Securities)

Debt Securities

(Title of the Indenture Securities)

FORM T-1

* Incorporated by reference to Exhibit 25.1 to Amendment No. 2 to registration statement on S-4, Registration Number 333-128217 filed on November 15, 2005.

** Incorporated by reference to Exhibit 25.1 to registration statement on form S-3ASR, Registration Number 333-199863 filed on November 5, 2014.

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SIGNATURE

Pursuant to the requirements of the Trust Indenture Act of 1939, as amended, the Trustee, U.S. BANK NATIONAL ASSOCIATION, a national banking association organized and existing under the laws of the United States of America, has duly caused this statement of eligibility and qualification to be signed on its behalf by the undersigned, thereunto duly authorized, all in the City of Atlanta, State of Georgia on the 5th of September, 2018.

3

Exhibit 2

Exhibit 2

Office of the Comptroller of the Currency Washington, DC 20219 CERTIFICATE OF CORPORATE EXISTENCE I, Joseph Otting, Comptroller of the Currency, do hereby certify that: 1. The Comptroller of the Currency, pursuant to Revised Statutes 324, et seq, as amended, and 12 USC 1, et seq, as amended, has possession, custody, and control of all records pertaining to the chartering, regulation, and supervision of all national banking associations. 2. “U.S. Bank National Association,” Cincinnati, Ohio (Charter No. 24), is a national banking association formed under the laws of the United States and is authorized thereunder to transact the business of banking on the date of this certificate. IN TESTIMONY WHEREOF, today, May 8, 2018, I have hereunto subscribed my name and caused my seal of office to be affixed to these presents at the U.S. Department of the Treasury, in the City of Washington, District of Columbia Comptroller of the Currency

Exhibit 3

Exhibit 3

Office of the Comptroller of the Currency Washington, DC 20219 CERTIFICATE OF FIDUCIARY POWERS I, Joseph Otting, Comptroller of the Currency, do hereby certify that: 1. The office of the Comptroller of the Currency, pursuant to Revised Statutes 324, et seq, as amended, and 12 USC 1, et seq, as amended, has possession, custody, and control of all records pertaining to the chartering, regulation, and supervision of all national banking associations. 2. “U.S. Bank National Association,” Cincinnati, Ohio (Charter No. 24), was granted, under the hand and seal of the Comptroller, the right to act in all fiduciary capacities authorized under the provisions of the Act of Congress approved September 28, 1962, 76 Stat. 668, 12 USC 92a, and that the authority so granted remains in full force and effect on the date of this certificate. IN TESTIMONY WHEREOF, today, May 8, 2018, I have hereunto subscribed my name and caused my seal of office to be affixed to these presents at the U.S. Department of the Treasury, in the City of Washington, District of Columbia Comptroller of the Currency

Exhibit 6

Exhibit 6

CONSENT

In accordance with Section 321(b) of the Trust Indenture Act of 1939, the undersigned, U.S. BANK NATIONAL ASSOCIATION hereby consents that reports of examination of the undersigned by Federal, State, Territorial or District authorities may be furnished by such authorities to the Securities and Exchange Commission upon its request therefor.

Dated: September 5, 2018

Exhibit 7

U.S. Bank National Association

Statement of Financial Condition

As of 6/30/2018

($000’s)