Dear Sirs,

As a manufacturer of IVD medical devices, we are constantly looking for a good quality raw material source. At this point, we are interested in a Variamine Blue B diazonium salt (4-Amino-4′-methoxydiphenylamine-diazonium chloride), CAS No. 101-69-9. Could you provide this chemical? The desirable quality grade would be: pro analysis, or for microscopy, or extra pure. If you can offer this chemical, please make a quotation for 5 grams. Also, please send us a certificate of analysis.
Looking forward to your reply.

Best regards.