This product can be solubilized in 0.1M HCl at > 2.0 mg/ml. The exact solubility of this product will be listed on the lot-specific Certificate of Analysis.
Please navigate to the DOCUMENTATION section of the Product Detail Page to access a sample or lot specific Certificate under ‘Certificate of Analysis’:
https://www.sigmaaldrich.com/product/sigma/sml2370#product-documentation