| Section: 9 | Organic dyes and pigments (OD) | Page: 228 | 
| IRUG filename: ROD00228 | Data type: Raman | IRUG material class: Organic dyes and pigments (OD) | 
| Sample type: Reference material | Common name(s): Pigment Yellow 127 (PY127), Diarylide Yellow, Azo, CI21102 | Trade name(s): 2127 Diarylide Yellow | 
| CAS name: C.I. Pigment Yellow 127; Butanamide, 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-, N,N'-bis(o-anisyl and 2,4-xylyl) derivs. (also in CAS Registry) | Sample source 1: Lansco | Sample identifier 1: 2127 Diarylide Yellow | 
| Sample source 2: Getty Conservation Institute | Source location 2: 1200 Getty Center Dr., Los Angeles, CA, US  | Sample identifier 2: SP21150 | 
| Sample source 3: Royal Institute for Cultural Heritage (KIK/IRPA) | Source location 3: Jubelpark 1, 1000 Brussels, Belgium | Color: Yellow | 
| 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: C35 H32 Cl2 N6 O5 | CAS registry no: 68610-86-6 |