=== modified file 'purchase/purchase.py'
--- purchase/purchase.py	2012-12-17 22:28:27 +0000
+++ purchase/purchase.py	2012-12-18 13:07:38 +0000
@@ -971,10 +971,15 @@
             context_partner.update( {'lang': lang, 'partner_id': partner_id} )
         product = product_product.browse(cr, uid, product_id, context=context_partner)
         name = product.name
+        supp_code_name = ''
+        seq = 100
+        for data in product.seller_ids:
+            if data.sequence < seq:
+                supp_code_name = (data.product_code and '[' + data.product_code + '] ' or '') + (data.product_name and data.product_name or '') 
+                seq = data.sequence 
         if product.description_purchase:
             name += '\n' + product.description_purchase
-        res['value'].update({'name': name})
-
+        res['value'].update({'name': supp_code_name or name})
         # - set a domain on product_uom
         res['domain'] = {'product_uom': [('category_id','=',product.uom_id.category_id.id)]}