Specimen Common Stock Certificate



 Exhibit 4.2 
  


					
	 Number
 __
	  	 	  	Shares
**______**
	 	  	COMMON STOCK                        	  	 
	CUSIP NO. 42224P 10 6	  	 	  	 

  
 Incorporated under
the Laws of the State of Delaware 
 HEALTHCARE ACQUISITION PARTNERS CORP. 
 The Corporation is Authorized to Issue 
  
 200,000,000 SHARES OF COMMON STOCK, PAR VALUE $0.0001 EACH 
  
 This Certifies that
                                        
                                        
                                        
                                        
     is the owner of
                    (**                
**)                                        
                                        
                                        
                     fully-paid and non-assessable shares of Common Stock, par value $0.0001 per share, of HEALTHCARE ACQUISITION PARTNERS
CORP. transferable on the books of the Corporation in person or by duly authorized Attorney by surrender of this certificate properly endorsed. This certificate is not valid unless countersigned by the Transfer Agent and registered by the
Registrar. 
  
 In Witness Whereof the corporation has
caused this certificate to be executed on this      day of                     , 200  .

  

					
			
	  	 	 	 	  
	Chief Executive Officer	 	 	 	Secretary


	


					
			
	  	 	 	 	  
	Transfer Agent	 	 	 	 

  

							
	Number	 	 	 	 	 	Shares
	__	 	 	 	 	 	**_______**








 The following abbreviations, when used in the inscription on the face of this certificate, shall be
construed as though they were written out in full according to applicable laws or regulations: 
  

					
			
	 TEN COM
	  	 as tenants in common
	  	 Unif Gift Min Act -                      Custodian       
              

			
	 TEN ENT
	  	 tenants by the entireties
	  	                                        
     (Cust)                         (Minor)

			
	 JT TEN
	  	 as joint tenants with right of
	  	Under Uniform Gifts to Minors                    
	 	  	     survivorship and not as tenants
     in common
	  	Act:                                    
                             
			
	 	  	 	  	(State)

  
 Additional
Abbreviations may also be used though not in the above list. 
  
 Healthcare Acquisition Partners Corp. 
  
 The
Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences and relative, participating, option or other special rights of each class of stock or series thereof of the Corporation and the
qualifications, limitations, or restrictions of such preferences and/or rights. This certificate and the shares represented hereby are issued and shall be held subject to all the provisions of the Certificate of Incorporation and all amendments
thereto and resolutions of the Board of Directors providing for the issue of shares of Preferred Stock (copies of which may be obtained from the secretary of the Corporation), to all of which the holder of this certificate by acceptance hereof
assents. 
  

	
	The holder of this certificate shall be entitled to receive funds from the Corporation’s trust fund only in the event of a liquidation of the Corporation upon failure to
consummate a business combination or if the holder seeks to convert his respective shares into cash upon a business combination which he voted against and which is actually completed by the Corporation. Except as required by applicable law, in no
other circumstances shall the holder have any right or interest of any kind in or to the trust fund.

  
 For Value Received,
                     hereby sell, assign and transfer unto 
  

	
	 PLEASE INSERT SOCIAL SECURITY OR OTHER
 IDENTIFYING NUMBER OF ASSIGNEE

	
	  

  
  

 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) 
  
 shares of the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint                      Attorney, to transfer the said stock on the books of the within named
Corporation with full power of substitution in the premises. 
  

									
	 	 	 	 	 
					
	Dated	 	 	 	 	 	By:	 	 
	 	 	 	 	 	 	NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY
CHANGE WHATEVER.

  

			
	Signature(s) Guaranteed:
		
	 By:
	 	 
	THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED
SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15).