EXHIBIT 5-c


                           RICHARDS, LAYTON & FINGER
                          A PROFESSIONAL ASSOCIATION
                               ONE RODNEY SQUARE
                                 P.O. BOX 551
                          WILMINGTON, DELAWARE 19899
                                (302) 651-7700
                              FAX (302) 651-7701
                                  WWW.RLF.COM




                                              March 1, 2002




Morgan Stanley Capital Trust IV
c/o Morgan Stanley Dean Witter & Co.
1585 Broadway
New York, New York 10036

                      Re: Morgan Stanley Capital Trust IV

Ladies and Gentlemen:

         We have acted as special Delaware counsel for Morgan Stanley Dean
Witter & Co., a Delaware corporation (the "Company"), and Morgan Stanley
Capital Trust IV, a Delaware business trust (the "Trust"), in connection with
the matters set forth herein. At your request, this opinion is being furnished
to you.

         For purposes of giving the opinions hereinafter set forth, our
examination of documents has been limited to the examination of originals or
copies of the following:

         (a) The Certificate of Trust of the Trust, dated as of February 12,
1998 (the "Original Certificate"), as filed in the office of the Secretary of
State of the State of Delaware (the "Secretary of State") on February 12, 1998;

         (b) The Trust Agreement of the Trust, dated as of February 12, 1998
(the "Original Trust Agreement"), among the Company, the administrators of the
Trust named therein and the trustees of the Trust named therein;

         (c) The Certificate of Amendment of the Original Certificate, dated as
of September 24, 2001 (together with the Original Certificate, the
"Certificate"), as filed in the office of the Secretary of State on September
24, 2001;





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March 1, 2002
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         (d) Amendment No. 1 to the Original Trust Agreement, dated as of
September 24, 2001, among the Company, the administrators of the Trust named
therein and the trustees of the Trust named therein;

         (e) The Registration Statement (the "Registration Statement") on Form
S-3, including a preliminary prospectus (the "Prospectus"), relating to the
Capital Securities of the Trust representing preferred undivided beneficial
interests in the assets of the Trust (each, a "Capital Security" and
collectively, the "Capital Securities"), as proposed to be filed by the
Company, the Trust and others with the Securities and Exchange Commission on or
about March 1, 2002;

         (f) A form of Amended and Restated Trust Agreement of the Trust
(including Exhibits A, C and D thereto) (the "Trust Agreement"), to be entered
into among the Company, the administrators of the Trust named therein, the
trustees of the Trust named therein, and the holders, from time to time, of
undivided beneficial interests in the assets of the Trust, filed as an exhibit
to the Registration Statement; and

         (g) A Certificate of Good Standing for the Trust, dated February 27,
2002, obtained from the Secretary of State.

         Capitalized terms used herein and not otherwise defined are used as
defined in the Trust Agreement.

         For purposes of this opinion, we have not reviewed any documents other
than the documents listed in paragraphs (a) through (g) above. In particular,
we have not reviewed any document (other than the documents listed in
paragraphs (a) through (g) above) that is referred to in or incorporated by
reference into the documents reviewed by us. We have assumed that there exists
no provision in any document that we have not reviewed that is inconsistent
with the opinions stated herein. We have conducted no independent factual
investigation of our own but rather have relied solely upon the foregoing
documents, the statements and information set forth therein and the additional
matters recited or assumed herein, all of which we have assumed to be true,
complete and accurate in all material respects.

         With respect to all documents examined by us, we have assumed (i) the
authenticity of all documents submitted to us as authentic originals, (ii) the
conformity with the originals of all documents submitted to us as copies or
forms, and (iii) the genuineness of all signatures.

         For purposes of this opinion, we have assumed (i) that the Trust
Agreement constitutes the entire agreement among the parties thereto with
respect to the subject matter thereof, including with respect to the creation,
operation and termination of the Trust, and that the Trust Agreement and the
Certificate are in full force and effect and have not been amended, (ii) except
to the extent provided in paragraph 1 below, the due creation or due
organization or due





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formation, as the case may be, and valid existence in good standing of each
party to the documents examined by us under the laws of the jurisdiction
governing its creation, organization or formation, (iii) the legal capacity of
natural persons who are signatories to the documents examined by us, (iv) that
each of the parties to the documents examined by us has the power and authority
to execute and deliver, and to perform its obligations under, such documents,
(v) the due authorization, execution and delivery by all parties thereto of all
documents examined by us, (vi) the receipt by each Person to whom a Capital
Security is to be issued by the Trust (collectively, the "Security Holders") of
a Capital Securities Certificate evidencing ownership of such Capital Security
and the payment for the Capital Security acquired by it, in accordance with the
Trust Agreement and the Registration Statement, and (vii) that the Capital
Securities are issued and sold to the Security Holders in accordance with the
Trust Agreement and the Registration Statement. We have not participated in the
preparation of the Registration Statement and assume no responsibility for its
contents.

         This opinion is limited to the laws of the State of Delaware
(excluding the securities laws of the State of Delaware), and we have not
considered and express no opinion on the laws of any other jurisdiction,
including federal laws and rules and regulations relating thereto. Our opinions
are rendered only with respect to Delaware laws and rules, regulations and
orders thereunder that are currently in effect.

         Based upon the foregoing, and upon our examination of such questions
of law and statutes of the State of Delaware as we have considered necessary or
appropriate, and subject to the assumptions, qualifications, limitations and
exceptions set forth herein, we are of the opinion that:

         1. The Trust has been duly created and is validly existing in good
standing as a business trust under the Delaware Business Trust Act.

         2. The Capital Securities will represent valid and, subject to the
qualifications set forth in paragraph 3 below, fully paid and nonassessable
preferred undivided beneficial interests in the assets of the Trust.

         3. The Security Holders, as beneficial owners of the Trust, will be
entitled to the same limitation of personal liability extended to stockholders
of private corporations for profit organized under the General Corporation Law
of the State of Delaware. We note that the Security Holders may be obligated to
make payments as set forth in the Trust Agreement.

         We consent to the filing of this opinion with the Securities and
Exchange Commission as an exhibit to the Registration Statement. In addition,
we hereby consent to the use of our name under the heading "Legal Matters" in
the Prospectus. In giving the foregoing consents, we do not thereby admit that
we come within the category of Persons whose consent is required under





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Section 7 of the Securities Act of 1933, as amended, or the rules and
regulations of the Securities and Exchange Commission thereunder. Except as
stated above, without our prior written consent, this opinion may not be
furnished or quoted to, or relied upon by, any other Person for any purpose.

                                      Very truly yours,


                                      /s/ Richards, Layton & Finger, P.A.