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Basic Information
CAS No.: 53-85-0
Name: 5,6-Dichloro-1-beta-D-ribofuranosylbenzimidazole
Article Data: 8
Molecular Structure:
Molecular Structure of 53-85-0 (5,6-Dichloro-1-beta-D-ribofuranosylbenzimidazole)
Formula: C12H12 Cl2 N2 O4
Molecular Weight: 319.144
Synonyms: 5,6 Dichloro 1 beta D ribofuranosyl 1 H benzimidazol;5,6 Dichloro 1 beta ribofuranosylbenzimidazole;5,6-Dichloro-1-beta-D-ribofuranosyl-1-H-benzimidazol;5,6-Dichloro-1-beta-ribofuranosylbenzimidazole;Dichlorobenzimidazole Riboside;Dichlororibofuranosylbenzimidazole;DRB;Riboside, Dichlorobenzimidazole
Density: 1.84 g/cm3
Melting Point: 222-224°C
Boiling Point: 606.2 °C at 760 mmHg
Flash Point: 320.4 °C
Solubility: Soluble in 100% ethanol, DMSO (100mM) or dimethyl formamide (100mM).
Appearance: White to off-white crystalline solid.
Safety: Human mutation data reported. When heated to decomposition it emits toxic fumes of NOx.
PSA: 87.74000
LogP: 0.95460
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Chemistry

Molecular Structure of DRB (CAS NO.53-85-0) :

IUPAC Name:2-(5,6-Dichlorobenzimidazol-1-yl)-5-(hydroxymethyl)oxolane-3,4-diol
Product Categories: Bases & Related Reagents;Inhibitors;Nucleotides
CAS NO: 53-85-0
Molecular Formula: C12H12Cl2N2O4
Molecular Weight: 319.14
Mol File: 53-85-0.mol
Index of Refraction: 1.749
Surface Tension: 70.7 dyne/cm
Density: 1.84 g/cm3
Flash Point: 320.4 °C
Enthalpy of Vaporization: 94.75 kJ/mol
Boiling Point: 606.2 °C at 760 mmHg
Vapour Pressure: 1.51E-15 mmHg at 25 °C
Melting point: 222-224 °C
Storage temp: -20 °C

Uses

 DRB (CAS NO.53-85-0)  is used as an inhibitor of RNA synthesis (causes premature termination of transcription).

Toxicity Data With Reference

1.    

oms-oin:oth 65 µmol/L

     BBACAQ    Biochimica et Biophysica Acta. 697 (1982),213.
2.    

oms-hmn:hla 40 µmol/L

     PNASA6    Proceedings of the National Academy of Sciences of the United States of America. 79 (1982),2569.

Safety Profile

WGK Germany: 3
RTECS of DRB (CAS NO.53-85-0): DD7310000

Specification

  DRB (CAS NO.53-85-0), its Synonyms are 1H-Benzimidazole, 5,6-dichloro-1-.beta.-D-ribofuranosyl- ; 1H-Benzimidazole, 5,6-dichloro-1-beta-D-ribofuranosyl- ; 5,6-Dichloro-1-.beta.-D-ribofuranosylbenzimidazole ; Benzimidazole, 5,6-dichloro-1-.beta.-D-ribofuranosyl- ; 1H-Benzimidazole, 5,6-dichloro-1-beta-D-ribofuranosyl- (9CI) ; 5,6-Dichloro-1-beta-D-ribofuranosylbenzimidazole ; 5,6-Dichlorobenzimidazole 1-beta-D-ribofuranoside ; 5,6-Dichlorobenzimidazole riboside .