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BOC-HIS(TOS)-MERRIFIELD RESIN

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BOC-HIS(TOS)-MERRIFIELD RESIN Basic information

Product Name:
BOC-HIS(TOS)-MERRIFIELD RESIN
Synonyms:
  • ethyl hydrogen heptane-1,7-dioate
  • Monoethyl Heptanedioate
  • heptanedioic acid monoethyl ester
  • Pimelic acid monomethyl ester
  • Heptanedioic acid 1-ethyl ester
  • Pimelic acid 1-hydrogen 7-ethyl ester
  • N-Alpha-T-Butoxycarbonyl-N-Im-Tosyl-L-Histidine-P-Hydroxymethyl Phenylacet
  • Ethyl hydrogen pimelate
CAS:
33018-91-6
MF:
C9H16O4
MW:
188.22
EINECS:
251-346-6
Product Categories:
  • Miscellaneous
Mol File:
33018-91-6.mol
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BOC-HIS(TOS)-MERRIFIELD RESIN Chemical Properties

Melting point:
10°C
Boiling point:
135-138°C 1mm
Density 
1.06
refractive index 
1.4420
Flash point:
135-138°C/1mm
storage temp. 
Sealed in dry,2-8°C
pka
4.74±0.10(Predicted)
form 
powder to lump to clear liquid
color 
White or Colorless to Almost white or Almost colorless
Water Solubility 
Not miscible or difficult to mix with water.
BRN 
1774583
InChI
InChI=1S/C9H16O4/c1-2-13-9(12)7-5-3-4-6-8(10)11/h2-7H2,1H3,(H,10,11)
InChIKey
NQYXFXWKKYGBNL-UHFFFAOYSA-N
SMILES
C(OCC)(=O)CCCCCC(O)=O
CAS DataBase Reference
33018-91-6
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Safety Information

Risk Statements 
36/38
Safety Statements 
26-36
WGK Germany 
3
HS Code 
2917.19.7050

MSDS

  • Language:English Provider:ALFA
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BOC-HIS(TOS)-MERRIFIELD RESIN Usage And Synthesis

Uses

Ethyl hydrogen pimelate is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff fields.

Synthesis

2050-20-6

33018-91-6

3) Synthesis of 7-ethoxy-7-oxoheptanoic acid: potassium hydroxide (KOH, 16.8 g, 0.30 mol) was added to a solution of diethyl heptanedioate (65 g, 0.30 mol) in ethanol (400 mL). The reaction mixture was stirred at 80 °C for 24 h. After completion of the reaction, the solvent was removed by concentration under reduced pressure. The concentrated mixture was poured into water and the pH of the aqueous solution was adjusted with concentrated sulfuric acid (H2SO4) to 1. The aqueous phase was extracted and the organic solvent was removed to give the crude product. The crude product was purified by fast column chromatography (silica gel SiO2 as stationary phase, eluent ratio of ethanol:ethyl acetate=1:10), and finally 7-ethoxy-7-oxoheptanoic acid was obtained (38 g, 67% yield).

References

[1] Patent: US2014/256775, 2014, A1. Location in patent: Paragraph 0178; 0183; 0184
[2] Journal of Medicinal Chemistry, 2009, vol. 52, # 9, p. 2776 - 2785
[3] Bulletin de la Societe Chimique de France, 1910, vol. <4>7, p. 219
[4] Journal of the Chemical Society, 1901, vol. 79, p. 1192
[5] Bioorganic Chemistry, 1998, vol. 26, # 3, p. 157 - 168

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