| Section: 9 | Organic dyes and pigments (OD) | Page: 181 | 
IRUG filename: ROD00181  | Data type: Raman  | IRUG material class: Organic dyes and pigments (OD)  | 
Sample type: Reference material  | Common name(s): Pigment Red 37 (PR37), Disazopyrazolone, Azo, CI21205  | Trade name(s): PV-Rot G, PV-Red G  | 
CAS name: 3H-Pyrazol-3-one, 4,4'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(2,1-diazenediyl)]bis[2,4-, dihydro-5-methyl-2-(4-methylphenyl)-  | Sample source 1: Farbwerke Hoechst  | Sample identifier 1: PV-Rot G  | 
Sample source 2: Historical Dye Collection, Dresden University of Technology (TU)   | Source location 2: Helmholtzstr. 10, Dresden, DE  | Sample identifier 2: Ref. 1136  | 
Sample source 3: Royal Institute for Cultural Heritage (KIK/IRPA)  | Source location 3: Jubelpark 1, 1000 Brussels, BE  | Color: Red  | 
Application: Raman microscopy  | Excitation source (nm): 785  | Mode: Scat  | 
Literature Reference: Fremout, W., Saverwyns, S. "Identification of synthetic, organic pigments: the role of a comprehensive digital Raman spectral library" J. Raman Spectrosc. 43 (2012): 1536-1544.  | Originating institution name: Royal Institute for Cultural Heritage   | Originating institution acronym: KIK/IRPA  | 
Molecular formula: C36 H34 N8 O4  | CAS registry no: 6883-91-6   |