system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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Exhibit 99.1 DISTRIBUTOR AGREEMENT THIS AGREEMENT, dated as of October 24, 2005 is between JOHNSON MATTHEY CATALOG COMPANY, INC., a Delaware corporation, d/b/a ALFA AESAR (hereinafter referred to as "ALFA AESAR"), having a mailing address of 30 Bond Street, Ward Hill, MA 01835-8099 and Nanophase Technologies Corporation, a Delaware corporation ("NTC"), having its principal offices at 1319 Marquette Drive, Romeoville, IL 60446. Whereas NTC is in the business of manufacturing and selling nanoparticles and nanoparticle dispersions (collectively "nanomaterials") and wishes to expand the availability and marketing of nanomaterials for research purposes, and Whereas ALFA AESAR is in the business of efficiently packaging, marketing, selling and distributing research materials, and NTC desires to appoint and name ALFA AESAR, and ALFA AESAR desires to be appointed and named, exclusive distributor of the Products (as defined below) on a worldwide basis in research quantities for research purposes. NOW, THEREFORE, in consideration of the mutual promises herein contained, the parties hereto, each intending to be legally bound hereby, agree as follows: 1. Definitions: 1.1 "Product" or "Products" mean those nanomaterials, coated nanomaterials and dispersions of nanomaterials listed in Schedule A, as amended from time to time by mutual written agreement signed by the parties. 1.2 "Product Price" means the price for Products listed in Schedule A sold by NTC to ALFA AESAR. 1.3 "Research Quantities" means, in the case of nanomaterials and coated nanomaterials, quantities purchased and distributed in individual orders of 54 kilograms or less, and, in the case of dispersions of nanomaterials, quantities purchased and distributed in individual orders of 60 kilograms or less. 1.4 "Commercial Quantities" means in the case of nanomaterials and coated nanomaterials, quantities purchased and distributed in individual orders greater than 54 kilograms, and, in the case of dispersions of nanomaterials, quantities purchased and distributed in individual orders greater than 60 kilograms. 1.5 "Custom Services" is any program or product offered by NTC other than the manufacture of Products as listed in Schedule A. 1.6 "Territory" is all areas in which ALFA AESAR markets, sells or distributes chemicals or other materials through its various sales channels, including but not limited to its present and future catalog distribution networks, Internet web sites, and other distribution channels. 1 1.7 "Trademark" means all common law, registered and unregistered state, federal and foreign trade names, trademarks, and service marks, including without limitation any logos and slogans. 1.8 "Net Sales" means the cost charged to a customer for goods and services less the costs for shipping, handling, taxes, duties and credits. 2. Appointment; Reservation of Rights; Referrals. 2.1 NTC hereby grants to ALFA AESAR, and its subsidiaries and affiliates, the exclusive right to market, sell and distribute Research Quantities of the Products within the Territory, ALFA AESAR hereby accepts such right and agrees to use its reasonable efforts to promote the marketing, sale and distribution of Research Quantities of the Products throughout the Territory in accordance with the terms and conditions of this Agreement using normal and standard practices. ALFA AESAR shall have the right, in its sole discretion, to sell Products outside of the Territory. ALFA AESAR agrees that, so long as NTC provides ALFA AESAR with Products for ALFA AESAR' S marketing, sale and distribution of Research Quantities of the Products within the Territory, ALFA AESAR shall purchase all its requirements of the Products (including nanomaterials with physical or chemical properties substantially the same as the Products) exclusively from NTC during the term of this Agreement, ALFA AESAR shall: i) buy the Products in quantities listed in Schedule A and repackage into the research sample quantities as it deems reasonable and appropriate for distribution and sale on a worldwide basis at such resale prices it shall determine from time to time, provided that any such repackaging shall comply with applicable safety laws and regulations; ii) attempt to keep reasonably sufficient stocks of the Products to meet customer orders and to store such stocks in such conditions as NTC may recommend from time to time to prevent deterioration or damage. 2.2 NTC reserves for itself the right (i) to sell Commercial Quantities of the Products in individual order quantities of single commercial packages or greater, subject to Section 6; and (ii) to provide samples of the Products in any quantity, free of charge, to its commercial partners or potential partners. 3. Pricing, Exclusions and Purchase Orders. 3.1 Subject to Section 2.2, NTC shall sell Products to ALFA AESAR, at the Product Price as amended from time to time pursuant to this Section
"""

Extract the exact clause related to "Exclusivity" from the excerpt above.

assistant: ALFA AESAR agrees that, so long as NTC provides ALFA AESAR with Products for ALFA AESAR' S marketing, sale and distribution of Research Quantities of the Products within the Territory, ALFA AESAR shall purchase all its requirements of the Products (including nanomaterials with physical or chemical properties substantially the same as the Products) exclusively from NTC during the term of this Agreement, ALFA AESAR shall: i) buy the Products in quantities listed in Schedule A and repackage into the research sample quantities as it deems reasonable and appropriate for distribution and sale on a worldwide basis at such resale prices it shall determine from time to time, provided that any such repackaging shall comply with applicable safety laws and regulations; ii) attempt to keep reasonably sufficient stocks of the Products to meet customer orders and to store such stocks in such conditions as NTC may recommend from time to time to prevent deterioration or damage.