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201715

Sigma-Aldrich

Pinacyanol chloride

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Synonym(s):
1,1′-Diethyl-2,2′-carbocyanine chloride, 2,2′-Trimethinequinocyanine chloride, Quinaldine blue
Empirical Formula (Hill Notation):
C25H25ClN2
CAS Number:
Molecular Weight:
388.93
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

form

powder

Quality Level

mp

270 °C (dec.) (lit.)

λmax

560 nm (2nd)
604 nm

ε (extinction coefficient)

≥150000 at 603-609 nm in ethanol at 0.001 g/L
≥65000 at 559-565 nm in ethanol at 0.001 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Cl-].CCN1C(=C\C=C\c2ccc3ccccc3[n+]2CC)\C=Cc4ccccc14

InChI

1S/C25H25N2.ClH/c1-3-26-22(18-16-20-10-5-7-14-24(20)26)12-9-13-23-19-17-21-11-6-8-15-25(21)27(23)4-2;/h5-19H,3-4H2,1-2H3;1H/q+1;/p-1

InChI key

FVMNARAKYNRZID-UHFFFAOYSA-M

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1 of 4

This Item
T4375T2763T4069
Pinacyanol chloride

201715

Pinacyanol chloride

Tetrazolium Blue Chloride used in colorimetric determination of reducing compounds

T4375

Tetrazolium Blue Chloride

Thymol iodide

T2763

Thymol iodide

JC-1 solid

T4069

JC-1

form

powder

form

powder

form

powder

form

solid

ε (extinction coefficient)

≥150000 at 603-609 nm in ethanol at 0.001 g/L, ≥65000 at 559-565 nm in ethanol at 0.001 g/L

ε (extinction coefficient)

-

ε (extinction coefficient)

-

ε (extinction coefficient)

≥175000 at 511-517 nm in methanol

storage temp.

room temp

storage temp.

room temp

storage temp.

2-8°C

storage temp.

room temp

λmax

560 nm (2nd), 604 nm

λmax

-

λmax

-

λmax

-

mp

270 °C (dec.) (lit.)

mp

255 °C (dec.) (lit.)

mp

-

mp

-

Biochem/physiol Actions

Pinacyanol chloride (1, 1-diethyl-2, 2-carbocyanine chloride), also known as quinaldine blue or PIN, belongs to the class of symmetric trimethinecyanine dyes. It is widely used as a histological stain. Pinacyanol chloride is used in the study of bacterial polysaccharides. Pinacyanol chloride exposure induces respiratory immunogenicity. PIN has two absorption maximums at 605nm and 550nm, which are known asα and β bands respectively.

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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