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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