DL-Dithiothreitol
SIGMA/43815 - BioUltra, for molecular biology, ≥99.5% (RT)
Synonym: (±)-Dithiothreitol, rac-Dithiothreitol, Dithiothreitol; threo-
CAS Number: 3483-12-3
Empirical Formula (Hill Notation): C4H10O2S2
Molecular Weight: 154.25
EC Number: 222-468-7
MDL Number: MFCD00004877
Linear Formula: HSCH2CH(OH)CH(OH)CH2SH
Product Type: Chemical
| λ | 0.1 M in H2O |
| anion traces | sulfate (SO42-): ≤50 mg/kg |
| assay | ≥99.5% (RT) |
| cation traces | Al: ≤5 mg/kg |
| As: ≤0.5 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤10 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| K: ≤50 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Na: ≤500 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| form | powder |
| grade | for molecular biology |
| impurities | DNases, none detected |
| insoluble matter, passes filter test | |
| phosphatases, none detected | |
| proteases, none detected | |
| RNases, none detected | |
| ≤0.3% 4,5-dihydroxy-1,2-dithian |
|
| InChI | 1S/C4H10O2S2/c5-3(1-7)4(6 |
| InChI key | VHJLVAABSRFDPM-QWWZWVQMSA |
| mp | 41-44 °C (lit.) |
| pH | 4.0-6.5 (25 °C, 0.1 M in H2O) |
| product line | BioUltra |
| Quality Level | 200  |
| reaction suitability | reagent type: reductant |
| SMILES string | O[C@H](CS)[C@H](O)CS |
| solubility | H2O: 0.1 M at 20 °C, clear, colorless |
| storage temp. | 2-8°C |
| UV absorption | λ: 260 nm Amax: 0.400 |
| λ: 280 nm Amax: 0.100 |
| Application: | An excellent reagent for maintaining SH groups in reduced state; quantitatively reduces disulfides. DTT is effective in sample buffers for reducing protein disulfide bonds prior to SDS-PAGE. DTT can also be used for reducing the disulfide bridge of the cross-linker N,N′-bis(acryloyl)cystami |
| Application: | DTT has been used:• as an enzyme stabilizer to maintain exebacase stability • for peptide extraction and protein denaturation • in sample preparation and reversal of formaldehyde crosslinks before mass spectrometry • as a buffer component to extract synaptogliosome |
| Biochem/physiol Actions: | Dithiothreitol (DTT) is broadly used in chemical peptide synthesis and biochemical preparations of thiol proteins. Additionally, studies on protein folding and enzyme activity in protein chemistry make use of DTT. This reagent explicitly mediates the thiol-disulfide exchange reaction to completely reduce the intra-or between sub-atomic disulfide bonds in biomolecules. This reaction brings about the arrangement of thiols and the cyclic disulfide of DTT. |
| Features and Benefits: | • BioUltra grade powder suitable for molecular biology • DNase, RNase, phosphatase, and protease-free insoluble matter, passes the filter test • Stringently tested and free from trace metals |
| General description: | Dithiothreitol (DTT) is a thiol-reducing reagent that quantitatively reduces disulfide (SH) groups in biological molecules. It specifically targets the disulfide bridge of the cross-linker N,N′-bis(acryloyl)cystamine to break apart the matrix of a polyacrylamide gel. DTT is less pungent and less toxic than 2-mercaptoethanol. Typically, a seven-fold lower concentration of DTT (100 mM) is more efficient than that of 2-mercaptoethanol (5% v/v, 700 mM). |
| Other Notes: | For additional information on our range of Biochemicals , please complete this form . |
| Other Notes: | Isolation of RNA using guanidinium salts. Inclusion of a reductant enhances denaturation by breaking intramolecular protein disulfide bonds. |
| Symbol |   GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H302 - H315 - H318 |
| Precautionary statements | P264 - P270 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 |
| Hazard Codes | Xn |
| Risk Statements | 22-36/37/38 |
| Safety Statements | 26-36 |
| RIDADR | UN 3335 |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.5% (RT) |
| mp | 41-44 °C (lit.) |
| Storage Temp. | 2-8°C |
| UNSPSC | 12161504 |