CRM-dmMCLR
Certified Calibration Solution for [Dha 7 ]-Microcystin-LR
[Dha 7 ]-Microcystin-LR (7-desmethyl-microcystin-LR; dmMCLR) is a cyclic peptide toxin produced by freshwater cyanobacteria [1]. Microcystins have been associated with domestic and wild animal poisonings and pose a threat to human health through contamination of drinking water supplies. CRM- dmMCLR is a certified instrument calibration solution prepared to aid the analyst in the determination of [Dha 7 ]-Microcystin-LR. Each ampoule contains approximately 0.5 mL of a solution of the toxin dissolved in aqueous methanol (1:1, v/v) at a concentration suitable for calibration of liquid chromatography experiments.
Table 1: Certified concentration values for [Dha 7 ]-Microcystin-LR in CRM-dmMCLR.
[Dha 7 ]-Microcystin-LR
CAS registry no: 134842-07-2
Molecular formula: C 48 H 72 N 10 O 12
Molecular weight: 981.2 g/mol
[M+H] + : m/z 981.5404
Expiry date: 1 year from date of sale.
Storage conditions: freezer (-12 °C or lower)
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