| Section: 9 | Organic dyes and pigments (OD) | Page: 146 | 
IRUG filename: IOD00146  | Data type: Infrared  | IRUG material class: Organic dyes and pigments (OD)  | 
Sample type: Reference material  | Common name(s): Rhamnazin, Natural Yellow 13 component, CI75700  | Chemical/botanical name(s): Quercetin 3',7-dimethyl ether  | 
CAS name: 4H-1-Benzopyran-4-one, 3,5-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-  | Sample source 1: Helmut Schweppe Collection of Early Synthetic Dyes  | Source location 1: BASF, Ludwigshafen, Germany  | 
Sample identifier 1: Rhamnazin  | Sample source 2: Getty Conservation Institute  | Source location 2: The Getty Center, 1200 Getty Center Drive, Los Angeles, CA, 90049  | 
Sample identifier 2: Rhamnazin  | Color: Yellow  | Age: 1986, acquired  | 
Application: DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy)  | Mode: Refl  | Originating institution name: Getty Conservation Institute  | 
Originating institution acronym: GCI  | CAS registry no: 552-54-5  | 
IRUG Structure Tracking #: 1073 Common Name(s): Rhamnazin Chemical Name(s): 3,5,4'-Trihydroxy-7,3'-dimethoxyflavone CAS Name: 4H-1-Benzopyran-4-one, 3,5-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy- CAS Registry No: 552-54-5 IRUG Material Class: Organic dyes and pigments (OD) Molecular Formula: C17 H14 O7 MW: 330.29  |