Certificate of Analysis

Transcription

1 Certificate of Analysis Reference Substance N-Desmethylclobazam (Norclobazam) Catalogue Number: Lot Number: LGCFOR Molecular Formula: C 15 H 11 ClN 2 O 2 Molecular Weight: CAS Number: [ ] Long-term Storage: 2 to 8 C, dark Appearance: white solid Melting Point: 299 C (dec.) Assay as is : 98.8 % H N O Cl N O Date of shipment: 2016-May-20 This certificate is valid for two years from the date of shipment provided the substance is stored under the recommended conditions. Release Date: LGC GmbH Dr. Sabine Schröder Product Release LGC GmbH, Im Biotechnologiepark, TGZ II, D Luckenwalde, Germany 2012 LGC limited. All rights reserved. LGC Standards is part of the LGC Group. LoGiCal is a registered trademark of LGC Standards GmbH 6 pages 1

2 I. Identity The identity of the reference substance was established by following analyses. Ia. 1 H-NMR Spectrum Conditions: 400 MHz, DMSO-d 6 The structure is confirmed with the signals of the spectrum and their interpretation. LGC GmbH, Im Biotechnologiepark, TGZ II, D Luckenwalde, Germany page 2/6

3 Ib. Mass Spectrum Method: 4.5 kv ESI; vaporization temperature: 200 C, direct inlet m/z fragments 287 [ MH ] 245 [ MH C 2 H 2 O ] The signals of the mass spectrum and their interpretation are consistent with the structural formula. LGC GmbH, Im Biotechnologiepark, TGZ II, D Luckenwalde, Germany page 3/6

4 Ic. IR Spectrum Method: Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) Spectroscopy The signals of the IR spectrum and their interpretation are consistent with the structural formula. II. Purity The purity of the reference substance was analysed by high performance liquid chromatography (HPLC). HPLC Conditions: Column: Conditions: Detector: Injector: Hypersil Gold (C18) 1.0 ml/min, 40 C DAD Auto 5 µm, 150 x 4.6 mm 0-8 min Water/Acetonitrile 67/ min Water/Acetonitrile to 20/ min Water/Acetonitrile to 67/ min Water/Acetonitrile 67/33 (v/v); 0.1 % H 3PO nm 1 µl; mg/ml in Acetonitrile LGC GmbH, Im Biotechnologiepark, TGZ II, D Luckenwalde, Germany page 4/6

5 300 Surveyor PDA 4-230nm Retention Time mau mau Minutes Area Percent Report - Sorted by Signal Pk # Retention Time Area Area % Totals For the calculation the system peaks were ignored. The content of the analyte was determined as ratio of the peak area of the analyte and the cumulative areas of the purities, added up to 100 %. Results: Average % Number of results n=3 Standard deviation < 0.01 % LGC GmbH, Im Biotechnologiepark, TGZ II, D Luckenwalde, Germany page 5/6

6 III. Water Content Method: Karl Fischer titration Results: Average 0.07 % Number of results n=3 Standard deviation < 0.01 % IV. Residual Solvents Method: 1 H-NMR Result: 0.65 % Dichloromethane 0.18 % Methanol 0.12 % Ethyl acetate 0.03 % Acetone V. Final Result Total impurities (HPLC) 0.19 % Water content 0.07 % Residual solvents 0.98 % Assay (100 % method) % The assay is assessed to be 98.8 % as is The assay 'as is' is equivalent to the assay based on the not anhydrous and not dried substance respectively. 1 The calculation of the 100 % method follows the formula: Assay (%) = (100 % - KF - RES) * Purity HPLC (%) 100 % Water (KF) and Residual solvents (RES) are considered as absolute contributions, HPLC purity is considered as relative contribution. LGC GmbH, Im Biotechnologiepark, TGZ II, D Luckenwalde, Germany page 6/6