QUANTUMONLINE.COM SECURITY DESCRIPTION:  Merck & Co. Inc., formerly Schering-Plough Corp., 6.00% Mandatory Convertible Preferred Stock, liquidation preference $250 per share. The preferred shares are mandatorily convertible on 8/13/2010 into a variable number of Schering-Plough Corp. (NYSE: SGP) common shares based on the then current price of the common shares for 20 consecutive trading days immediate prior to the conversion date. The conversion settlement rate will be 7.4206 shares per unit if the then current market price is equal to or greater than $33.69 and 9.0909 shares per unit if the market price is equal to or less than $27.50. For market prices between those values the settlement rate will be $250 divided by the market value. The last reported sale price of the common stock on 8/9/2007 was $27.52. The preferred shares are convertible any time at the holder’s option into 7.4206 shares of common stock. If the price of the common stock exceeds $50.53 for at least 20 of 30 trading days, the company may force the conversion of the preferred stock into 7.4206 shares of common stock. Distributions of 6.00% ($15.00) per annum will be paid quarterly on 2/15, 5/15, 8/15 & 11/15 to holders of record on the date fixed by the board, not more than 60 days prior to the payment date (NOTE: the ex-dividend date is at least 2 business days prior to the record date). Dividends paid by the preferred are eligible for the 15% tax rate on dividends under normal holding restrictions and are also eligible for the dividends received deduction for corporate holders (see page S-45 of the prospectus for further information). In regards to payment of dividends and upon liquidation, the preferred shares rank equally with other preferreds of the company and senior to the common shares of the company. See the IPO prospectus for further information on the mandatory convertible preferred stock and their mandatory conversion provisions by clicking on the ‘Link to IPO Prospectus’ provided below.

Stock Exchange	Cpn Rate Ann Amt	LiqPref CallPrice	Call Date Matur Date	Moodys/S&P Dated	Conversion Shares@Price	Distribution Dates	15% Tax Rate
NYSE Chart	6.00% $15	$250.00 n.a.	8/13/2010 8/13/2010	Baa3 BBB 9/27/2009	7.4206@$33.69+ 9.0909@$27.50-	2/15, 5/15, 8/15 & 11/15 Click for MW ExDiv Date Click for Yahoo ExDiv Date	YES

Company's Online Information Links

HOME PAGE:     http://www.merck.com/
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Online Company Profile	Go to Online Profile

Company's Online SEC EDGAR Filings

Company's SEC EDGAR Filings

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Company's Email Address Links

Email Address	investor@publicstorage.com
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Address and Phone Numbers

Address:   One Merck Drive, Whitehouse Station, NJ 08889
Main Phone Number	908-423-1000
Fax Number	908-423-2592
Investor Contact   Alex Kelly	908-423-5185
Toll Free Phone Number	800-225-5675

CEO - Richard T. Clark

CFO - Peter N. Kellogg