Braille Code of
Chemical Notation
1997


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8  NAMES OF CHEMICAL COMPOUNDS.


Names of chemical compounds may contain upper- and lower-case English letters, non-English letters, numerals, punctuation, different type forms, small upper-case letters and other symbols. In print, numbers and/or letters may be separated by commas with no space following the comma. Follow the print, but use the numeric or letter indicator before each "single letter" or number. The print type form in names of chemical compounds must be duplicated in braille.


8.1 Print Form. It is essential to follow the print exactly.

    Example 8.1-1: n-butyramide

    .;n-butyramide

    Example 8.1-2: L-1-Tosyl-2-phenylethyl-chloromethylketone

    @",l-#1-,tosyl-#2-ph5yle?yl-
    *lorome?ylket"o

    Example 8.1-3: Guanosine 5' -diphosphate-3' -diphosphate

    ,guanos9e #5'-diphosphate-
    #3'-diphosphate

    Example 8.1-4: 2,4-dinitrobenzoic acid

    #2,#4-dinitrob5zoic acid

    Example 8.1-5: (FH4 stands for tetrahydrofolate.)
    N5,N10-methylene-FH4
    .;,n^5",.;,n^10"-me?yl5e-,f,h4

    Example 8.1-6: dichlorodiaminepalladium(II)

    di*lorodiam9epalladium(,,ii)

    Example 8.1-7: N-Acetyl-D-glucosamine

    .;,n-,acetyl-@",d-glucosam9e

    Example 8.1-8: -ketoglutarate

    .a-ketoglut>ate

    Example 8.1-9: 3-chloro-2,3-dimethylbutanoic acid

    #3-*loro-#2,#3-dime?ylbutanoic acid


    Example 8.1-10: 5 ,7 -dihydroxy-11-ketotetranorprostane-1,16-dioic acid

    #5.a,#7.a-dihydroxy-
    #11-ketotetranorpro/ane-
    #1,#16-dioic acid



    Example 8.1-11:

    N-acetylmuramyl-pentapeptide- -(4 1)-N-acetylglucosamine

    .;,n-acetylmuramyl-p5tapeptide-
    .b-(4 $o #1)-.;,n-acetylglucosam9e


8.2 Contractions. All contractions of English Braille, American Edition are used, except that care must be taken not to contract letters which overlap pre-fixes, suffixes, substituents, or functional groups. Use Nemeth Code rules when contractions are in contact with indicators and symbols of grouping, comparison, and operation.



    Example 8.2-1: dinitrophenol

    dinitroph5ol

    (di-nitro-phenol) (di is a prefix meaning two so the "in" contraction cannot be taken; nitro and phenol are functional groups so the "en" in phenol can be contracted.)


    Example 8.2-2: ethylenediaminetetraacetic acid

    e?yl5ediam9etetraacetic acid

    (ethyl-ene-di-amine-tetra-acetic acid)

      ethyl - substituent
      ene - suffix meaning double bond
      di - second position
      amine - substituent
      tetra - fourth position
      acetic acid - substituent
    Example 8.2-3: N-formylmethionine

    .;,n-=mylme?ion9e

    (N-formyl-methion-ine)
      N - protein
      formyl - substituent
      methion - substituent
      ine - suffix


8.3 Division of Names of Chemical Compounds. Sites for the division of names of chemical compounds must be carefully chosen. If possible these sites should be between substituents or functional groups, and numbers or letters preceding or within the name must be on the same line as the following substituent. In these examples, a slash represents preferred runover sites.



    Example 8.3-1: 3a,7a,2a-trihydroxycoprostane

    3a,7a,2a-tri/hydroxy/copro/stane


    Example 8.3-2: 3,5,3 -triiodothyronine

    3,5,3'-tri / iodo / thyro / nine



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