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5 Key Tips for Chemists: 3. Databases

ChemDraw

Cornell has a site license to ChemDraw, no cost to you.

  • Download the software directly from the CambridgeSoft website by clicking on the icon.
  • Register your Cornell University e-mail address (which must end with “@cornell.edu” or “@med.cornell.edu”) and create an account on the CambridgeSoft website to get access to the software download and license codes. 
  • Each person who needs to use the software needs to use their own serial numbers. CambridgeSoft limits the number of installations that each serial number can do.

Search databases from ChemDraw

  • ScFinder
  • Science of Synthesis

Polymers in SciFinder

Addition polymers and most condensation polymers put the molecular formula of the monomers, separated by dots, within brackets, and close with an “X”

  • propene homopolymer: (C3H6)x
  • styrene-isoprene copolymers(C8H8 . C5H8)x 
  • styrene-butadiene-ethene polymers(C8H8 . C4H6 . C2H4)x 

Structural repeating units of symmetric condensation polymers put the formula of the repeating unit within brackets and close with an “N”

  • polybutylene terephthalate(C14H12O4)n 
  • α-methyl-ω-hydroxy PE(C2H4O)nCH4O

‚ÄčMore polymer searching tips 

SciFinder & Reaxys comparison

  Reaxys SciFinder
Subject
  • Organic chemistry
  • All chemistry
Literature
  • Journals
  • Patents
  • Journals
  • Patents
  • Conference Proceedings
  • Technical Reports
  • Books (esp. Annuals)
Patent
  • 1869 to 1979
  • 1969 to present
  • Light from 1907

Dates

  • From 1771+
  • Updated quarterly
  • Bibliographic1907 (some earlier refs)
  • Substances  1947+
  • Reactions  “1985+”

Emphasis

  • Data
  • Structures / Substances
  • Reactions
  • Bibliographic information
  • Structures / Substances
  • Some data & reactions

Ease of use

  • Steep learning curve
  • High control over search
  • Easy to use
  • Limited control over search

Substances

  • 9.9 million Beilstein (3/07)
  • 2.5 million Gmelin (12/06)
  • 118 million (8/16)
  • (Plus 66 million sequences)

Reactions

  • 10 million Beilstein (3/07)
  •   2 million Gmelin (12/06)
  • 76.6 million (8/16)
  • (Plus 14 million synthetic preparations)

 

Reactions < 1985

  •  >> 350,000
  • 350,000 (?)

Structure searching

  • Yes
  • Yes

Substructure searching

  • Yes – full featured
  • Yes – but frequently must lock out rings (a major limitation)

Reaction searching

  • Yes
  • Yes – but frequently must lock out rings

 

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