If you realize you have incorrect product data on Amazon, you can fix this via Amazon Seller Central. You need to provide the correct and accurate information to Amazon in order to change the product detail page.
Here are the steps you need to follow:
1- Login to your account and click the “Help” icon from the right of the screen.
2- On the opening page, click the “Fix a product detail page” issue option and enter the ASIN of your listing.
3- On the opening page, enter the ASIN of your listing, select the attributes that you want to update and click continue.
4- Provide correct product data to change brand name, product name e.g from the opening page.