En este caso, diría que se puede traducir por "inicial", ya que el término "start-up agreement" se utiliza para muchas más cosas que las empresas emergentes.

Diría yo

Saludos

Estoy de acuerdo con Carmen.

Aquí tienes los resultados de Google con esta combinación, a ver si te sirve: http://www.google.com/webhp?hl=es&tab=pw&q=RESERVA ESPECIAL=...

Creo que el término es lo suficientemente amplio para que quepan múltiples posibilidades de negocio.

EJEMPLO
START-UP AGREEMENT
THIS INGRAM MICRO START-UP AGREEMENT("Agreement"), dated this 16th day of October, 1997, is made by and between INGRAM MICRO INC. ("Ingram"), a Delaware corporation, with its principal place of business at 1600 E. St. Andrew Place, Santa Ana, California 92705 and SONIC FOUNDRY, a Maryland corporation, with its principal place of business at 754 Williamson Street, Madison, Wisconsin 55703 ("Vendor").
RECITALS:
WHEREAS, Ingram is engaged in the sale and distribution of microcomputer products; and
WHEREAS, Vendor is engaged in the manufacture, production and supply of microcomputer products, ("Products"); and
WHEREAS, Ingram desires to purchase Products from Vendor for sale and distribution to Ingram's resellers on a North American basis pursuant to the terms and conditions of this Agreement;
NOW, THEREFORE, in consideration of the terms and conditions set forth herein, the parties agree as follows:

1. Order Fulfillment. Vendor will fulfill all Ingram's orders promptly and completely. If a shortage of any Product in Vendor's inventory exists in spite of Vendor's good faith efforts, Vendor agrees to allocate its available inventory of such Product to Ingram in proportion to Ingram's percentage of all of Vendor's customer orders for such Product during the previous sixty (60) days. Ingram shall not be required to purchase any minimum amount or quantity of the Product.
2. Delivery of Product. Vendor shall deliver all Products as designated in Ingram's Purchase Orders ("P.O.") unless Vendor rejects the P.O. within ten 10) days of P.O. date. Products will be shipped F.O.B. Ingram's warehouse unless otherwise indicated on such P.O. Vendor shall bear all shipping costs and risk of loss or damage to Products in transit. Risk of loss to Products will pass to Ingram upon receipt thereof; Ingram will maintain insurance coverage adequate to cover the normal cost of Products.
3. Title of Products. Vendor shall retain title to Products shipped hereunder until Products are sold by Ingram.
4. Product Marking. Vendor shall clearly mark on the packaging of each unit of Product the Product's name and computer compatibility. Such packaging shall also bear a machine-readable bar code identifier scannable in standard Uniform Product Code (UPC) format. The bar code must identify the Product as specified by the Uniform Code Council (UCC). If the Vendor or Ingram customers' require serial number tracking the serial number must be clearly marked and bar coded on the outside of the individual selling unit. The bar code shall fully comply with all conditions regarding standard product labeling set forth in Exhibit A in the then-current Ingram Micro's Guide To Bar Code: The Product Label. Ingram shall charge a one dollar $1.00) chargeback to Vendor for each unit of Product not in compliance with this Product marking section.