159220

Diethyl pyrocarbonate

96% (NT)

• Synonym(s): DEP, DEPC, Diethyl dicarbonate, Diethyl oxydiformate, Ethoxyformic acid anhydride
• Linear Formula: O(COOC₂H₅)₂
• CAS Number: 1609-47-8
• Molecular Weight: 162.14
• Beilstein: 637031
• EC Number: 216-542-8
• MDL number: MFCD00009106
• UNSPSC Code: 12352100
• PubChem Substance ID: 24849799
• NACRES: NA.22

Properties

• Assay: 96% (NT)
• form: liquid
• refractive index: n20/D 1.398 (lit.)
• bp: 93-94 °C/18 mmHg (lit.)
• density: 1.101 g/mL at 25 °C (lit.)
• shipped in: wet ice
• storage temp.: 2-8°C
• SMILES string: CCOC(=O)OC(=O)OCC
• InChI: 1S/C6H10O5/c1-3-9-5(7)11-6(8)10-4-2/h3-4H2,1-2H3
• InChI key: FFYPMLJYZAEMQB-UHFFFAOYSA-N

Description

General description

Diethyl pyrocarbonate reacts selectively with the single-stranded loops of cruciform structures. The irreversible inactivation of ribonuclease with diethylpyrocarbonate has been studied.

Application

Diethyl pyrocarbonate was used as:

• nuclease inhibitor for the extraction of undegraded nucleic acids from etiolated and green plant tissues
• an antimicrobial additive
• ribonuclease inhibitor
• histidine residue modifier
• reagent for conversion of imines to carbamates

Modification reagent for His and Tyr residues in proteins. Robust probe for structural disruptions in dsDNA, reacting with fully or partially unstacked bases.

Biochem/physiol Actions

Inactivates RNase in solution at about 0.1% (v/v), thus protecting RNA against degradation.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302
• Precautionary Statements: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 3
• Flash Point(F): 156.2 °F - closed cup
• Flash Point(C): 69 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves