3,6-Dichlorobenzene-1,2,4-tricarboxylic anhydride [3,6-Dichlorotrimellitic anhydride]

3,6-Dichlorobenzene-1,2,4-tricarboxylic anhydride

3,6-Dichlorotrimellitic anhydride

3,6-Dichlorotrimellitic anhydride is the key precursor that is used for preparing a variety of dichlorinated fluoresceins and rhodamines such as TET and HEX. These chlorinated fluoresceins and rhodamines are widely used for labeling oligos and in DNA sequencing.

Protocol

SDS

COA

Catalog	Size	Price	Quantity
4021	1 g	Price

Calculators

Common stock solution preparation

Table 1. Volume of DMF needed to reconstitute specific mass of 3,6-Dichlorobenzene-1,2,4-tricarboxylic anhydride [3,6-Dichlorotrimellitic anhydride] to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

	0.1 mg	0.5 mg	1 mg	5 mg	10 mg
1 mM	383.127 µL	1.916 mL	3.831 mL	19.156 mL	38.313 mL
5 mM	76.625 µL	383.127 µL	766.254 µL	3.831 mL	7.663 mL
10 mM	38.313 µL	191.564 µL	383.127 µL	1.916 mL	3.831 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
mg	÷	261.01 g/mol	=	mL	x	mM	=	mmol

Physical properties

Molecular weight	261.01
Solvent	DMF

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Freeze (< -15 °C)
UNSPSC	12352200
CAS	81742-10-1

Documents

Protocol
Safety Data Sheet
Certificate of Analysis

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Page updated on October 18, 2025