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Substance Name: Insulin, des-asn(21)-cys(20)-isopropylamide(A)-
RN: 110485-98-8


  • C-terminal amino acid residue (asparagine) of the A chain has been removed & the resulting free carboxyl group of the cysteine residue converted into the isopropylamide.

Molecular Formula

  • C252-H376-N64-O71-S6
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Names and Synonyms

Name of Substance

  • Insulin, des-asn(21)-cys(20)-isopropylamide(A)-


  • 21-Des-asn-20-cys-isopropylamide (A)insulin
  • 21-Des-asparaginyl-20-cysteine isopropylamide (A)insulin
  • Dacia-insulin
  • Insulin, 21-desasparaginyl-20-cysteine isopropylamide (A)-

Systematic Name

  • Insulin (ox), 9A-glycine-20A-(N-(1-methylethyl)-L-cysteinamide)-21A-de-L-asparagine-

Registry Numbers

CAS Registry Number

  • 110485-98-8

System Generated Number

  • 0110485988