Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 137-08-6, Whether you call it Vitamin B5, D[+]-N-[2 -4-Dihydroxy-3 -3-dimethylbutyryl]-&#946, -alanine, D-Pantothenic Acid Hemicalcium Salt or Vitamin B₅ you can be assured the Vitamin B5 products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.