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Recently I was searching for a chemical compound to meet my research needs, i.e. glutaraldehyde, and later I found that Merck has been released different name of compound: (1) glutaraldehyde and (2) glutardialdehyde, with the same CAS number, i.e. 111-30-8:

  1. Many articles I've read, just mention glutaraldehyde, not glutardialdehyde.
  2. Does glutardialdehyde and glutaraldehyde are the same compound?
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  • $\begingroup$ if the Merck says they are the same and they have the same CAS number, they are the same. I have never heard it referred to as glutardialdehyde and I worked for the business unit that made it. Merck is just trying to be "inclusive". $\endgroup$
    – user123462
    Jun 7, 2023 at 11:48
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    $\begingroup$ IMO, glutaraldehtyde follows from glutaric acid, which is already difunctional. Glutardialdehyde appears to be redundant. $\endgroup$
    – user55119
    Jun 7, 2023 at 16:10

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Many articles I've read, just mention glutaraldehyde, not glutardialdehyde.

Not only Merck, but also Sigma-Aldrich listed glutardialdehyde (25% solution) and glutaraldehyde (25% solution) under the same CAS # (111-30-8). Surprisingly, glutaraldehyde is more expensive (USD 48.70/100 mL) than glutardialdehyde (USD 34.10/100 mL)! :-)

Does glutardialdehyde and glutaraldehyde are the same compound?

Answer to this question is yes. However, the preferred name for the compound glutardialdehyde or glutaraldehyde (CAS #: 111-30-8) with the formula $\ce{OHC-(CH2)3-CHO}$ is pentanedial (Ref.1). Other names for the same compound included glutaraldehyde, glutardialdehyde, glutaric acid dialdehyde, glutaric aldehyde, glutaric dialdehyde, and 1,5-pentanedial (Wikipedia).

References:

  1. Nomenclature of Organic Chemistry : IUPAC Recommendations and Preferred Names 2013 (Blue Book); Prepared by Henri A. Favre and Warren H. Powell; The Royal Society of Chemistry: Cambridge, United Kingdom, 2014, p. 907 (ISBN: 978-0-85404-182-4).
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