Randy Wilhelm
Mallinckrodt, Inc
Discovery Research Peptide Team
rrwilhe@mkg.com
(314)654-3965
> ----------
> From: Nicola O'Reilly[SMTP:oreillyn@icrf.icnet.uk]
> Sent: Friday, February 26, 1999 4:25 AM
> To: Recipients of ABRF List
> Subject: Peptide mass of +14
>
> Dear All
>
> I'm making peptides using fmoc hbtu chemistry. Occasionally we see
> peptides
> which have two very close peaks by rp-hplc. The maldi mass spec gives the
> correct mass and a mass of petide +14. Does any one have any ideas what
> might be going on ?
>
> Thanks for your help
>
> Nicola O'Reilly
>
> PS Weather is dull & grey in London but the daffodils & forsythia have
> started flowering.
>
> --
> Nicola O'Reilly
> Peptide Synthesis Laboratory,
> Imperial Cancer Research Fund.
> 44 Lincoln's Inn Fields, London, WC2A 3PX.
> Tel 0171 269 3318
> Fax 0171 269 3579
>
>