Mathematically, yes, this would mean 14 grams would be added to a 10X stock. However, studies of the solubility of this supplement at 10X have not been performed. The end user should attempt this using a smaller volume to verify solubility.
Please see the links below to the product datasheet, the Yeast Drop Out page, and the Yeast Growth Protocols page:
Y2001 Datasheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/169/136/y2001dat.pdf
Yeast Drop-Out Bulletin:
https://www.sigmaaldrich.com/US/en/technical-documents/protocol/microbiological-testing/microbial-culture-media-preparation/yeast-drop-out
Yeast Growth Protocols page:
https://www.sigmaaldrich.com/US/en/technical-documents/protocol/microbiological-testing/pathogen-and-spoilage-testing/yeast-growth-protocols



