Interactive IRUG Spectrum


IRUG filename:
Data type:
IRUG material class:
Organic dyes and pigments (OD)
Sample type:
Reference material
Common name(s):
Pigment Red 122 (PR122), Quinacridone, Polycyclic, CI73915,
Trade name(s):
Sunfast Magenta 122
CAS name:
Quino[2,3-b]acridine-7,14-dione, 5,12-dihydro-2,9-dimethyl-
Sample source 1:
Sun Chemical Corp.
Sample identifier 1:
Sunfast Magenta 122
Sample source 2:
Washington State Patrol, Washington State Crime Laboratory
Source location 2:
2203 Airport Way South, Seattle, WA, 98104, US
Sample identifier 2:
Quinacridone Magenta (Pigment Red 122)
Maroon violet
DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy)
Literature Reference:
Suzuki, Edward M., and William P. Marshall. “Infrared Spectra of U.S. Automobile Original Topcoats (1974–1989): IV. Identification of Some Organic Pigments Used in Red and Brown Nonmetallic and Metallic Monocoats—Quinacridones.” Journal of Forensic Sciences, vol. 43, no. 3, 1998, pp. 514–542.
Originating institution name:
Washington State Patrol, Crime Laboratory Division
Originating institution acronym:
Molecular formula:
C22 H16 N2 O2
CAS registry no:

Related Structure(s)

IRUG Structure Tracking #: 831
Common Name(s): Pigment Red 122 (PR122); Quinacridone; Polycyclic; CI73915
CAS Name: Quino[2,​3-​b]​acridine-​7,​14-​dione, 5,​12-​dihydro-​2,​9-​dimethyl-
CAS Registry No: 980-26-7
IRUG Material Class: Organic dyes and pigments (OD)
Molecular Formula: C22 H16 N2 O2
MW: 340.37