| Section: 9 | Organic dyes and pigments (OD) | Page: 105 | 
IRUG filename: ROD00105  | Data type: Raman  | IRUG material class: Organic dyes and pigments (OD)  | 
Sample type: Reference material  | Common name(s): Pigment Yellow 188 (PY188), Diarylide Yellow, Azo, CI21094   | Trade name(s): Irgalite Yellow LBF  | 
CAS name: Butanamide, 2-[[3,3'-dichloro-4'-[[1-[[(2,4-dimethylphenyl)amino]carbonyl]-2-oxopropyl]azo], [1,1'-biphenyl]-4-yl]azo]-3-oxo-N-phenyl  | Sample source 1: Ciba  | Sample identifier 1: Irgalite Yellow LBF  | 
Sample source 2: Tate Colorant Collection, Tate Gallery, Tom Learner  | Source location 2: Millbank, Westminster, London SW1P 4RG, UK  | Sample identifier 2: PY188, Irgalite Yellow LBF  | 
Sample source 3: Museum of Fine Arts, Boston  | Source location 3: 465 Huntington Ave, Boston, MA 02115, US  | Color: Greenish yellow  | 
Application: Raman microscopy/microspectroscopy  | Excitation source (nm): 785  | Mode: Scat  | 
Originating institution name: Museum of Fine Arts Boston  | Originating institution acronym: MFAB  | Molecular formula: C34 H30 Cl2 N6 O4  | 
CAS registry no: 23792-68-9  | 
IRUG Structure Tracking #: 348 Common Name(s): Pigment Yellow 188 (PY188); Diarylide yellow; CI21094 CAS Name: Butanamide, 2-[[3,3'-dichloro-4'-[[1-[[(2,4-dimethylphenyl)amino]carbonyl]-2-oxopropyl]azo][1,1'-biphenyl]-4-yl]azo]-3-oxo-N-phenyl- CAS Registry No: 23792-68-9 IRUG Material Class: Organic dyes and pigments (OD) Molecular Formula: C34 H30 Cl2 N6 O4 MW: 657.55  |