Cyanine dye compounds having a substituted methine moiety that are nucleic acid stains, particularly for fluorescent staining of RNA, including compounds having the formula where R1 is a C1-C6 alkyl, sulfoalkyl, carboxyalkyl or C1-C6 alkoxy; each R2 is independently selected from the group consisting...http://www.google.de/patents/US20050208534?utm_source=gb-gplus-sharePatent US20050208534 - Methine-substituted cyanine dye compounds
