Interactive IRUG Spectrum


IRUG filename:
Data type:
IRUG material class:
Organic dyes and pigments (OD)
Sample type:
Reference material
Common name(s):
Pigment Red 88 (PR88), Thioindigo, Polycyclic, CI73312
Trade name(s):
Paliogen Red Violet L5080
CAS name:
Benzo[b]​thiophen-​3(2H)​-​one, 4,​7-​dichloro-​2-​(4,​7-​dichloro-​3-​oxobenzo[b]​thien-​2(3H)​-​ylidene)​-
Sample source 1:
BASF Corporation
Source location 1:
100 Park Avenue, Florham Park, New Jersey, 07932, US
Sample identifier 1:
Paliogen Red Violet L5080
Sample source 2:
Washington State Patrol, Washington State Crime Laboratory
Source location 2:
2203 Airport Way South, Seattle, WA, 98104, US
Sample identifier 2:
Thioindigo Bordeaux (Pigment Red 88)
Dark purple violet
DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy)
Literature Reference:
Suzuki, Edward M. "Infrared Spectra of U.S. Automobile Original Topcoats (1974–1989): V. Identification of Organic Pigments Used in Red Nonmetallic and Brown Nonmetallic and Metallic Monocoats—DPP Red BO and Thioindigo Bordeaux*." Journal of Forensic Sciences 44 (1999): 297-313.
Originating institution name:
Washington State Patrol, Crime Laboratory Division
Originating institution acronym:
Molecular formula:
C16 H4 Cl4 O2 S2
CAS registry no:
Other analytical methods:
XRF (x-ray fluorescence)

Related Structure(s)

IRUG Structure Tracking #: 200
Common Name(s): Pigment Red 88 (PR88); CI73312
CAS Name: Benzo[b]​thiophen-​3(2H)​-​one, 4,​7-​dichloro-​2-​(4,​7-​dichloro-​3-​oxobenzo[b]​thien-​2(3H)​-​ylidene)​-
CAS Registry No: 14295-43-3
IRUG Material Class: Organic dyes and pigments (OD)
Molecular Formula: C16 H4 Cl4 O2 S2
MW: 431.14