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55760-26-4

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55760-26-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55760-26-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,6 and 0 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 55760-26:
(7*5)+(6*5)+(5*7)+(4*6)+(3*0)+(2*2)+(1*6)=134
134 % 10 = 4
So 55760-26-4 is a valid CAS Registry Number.

55760-26-4Downstream Products

55760-26-4Relevant articles and documents

Determination of lysergic acid diethylamide (LSD), iso-LSD, and N-demethyl-LSD in body fluids by gas chromatography/ tandem mass spectrometry

Nelson, Chad C.

, p. 1578 - 1585 (1992)

Procedures for detection and quantitation of lysergic acid diethylamide (LSD), iso-LSD, and N-demethyl-LSD by capillary chromatography/tandem mass spectrometry (GC/MS/MS) are presented. Several methods for derivatization, sample introduction, and ionization, in combination with mass spectrometry/mass spectrometry (MS/MS), have been evaluated for overall ionization efficiency and product-ion sensitivity and specificity. Fragmentation pathways derived from low-energy collision-induced dissociation (CID) spectra of protonated LSD, and the protonated trimethylsilyl derivatives of LSD (LSD-TMS) and deuterium-labeled analogs of LSD, have been proposed. Principal dissociations primarily involve the amide and piperidine-ring moieties in which losses of CH3 radical, CH3NH2, CH3NCH2, diethylamine, diethylformamide, and N,N-diethylpropenamide from MH+ are observed. Positive-ion ammonia chemical ionization and subsequent MS/MS analysis of the protonated molecules (MH+) of the trimethylsilyl (TMS) derivatives of LSD, iso-LSD, and N-demethyl-LSD provide a high degree of specificity for identification of these compounds in urine or blood at low-pg/mL concentrations. Negative-ion chemical ionization and GC/MS/MS analysis of the molecular anion (M-) of the trifluoroacetyl (TFA) derivative is well suited for trace-level identification of N-demethyl-LSD, a metabolite of LSD.

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