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14135-71-8

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14135-71-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14135-71-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,1,3 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 14135-71:
(7*1)+(6*4)+(5*1)+(4*3)+(3*5)+(2*7)+(1*1)=78
78 % 10 = 8
So 14135-71-8 is a valid CAS Registry Number.

14135-71-8Relevant articles and documents

Determination of the synthetic origin of methamphetamine samples by 2H NMR spectroscopy

Armellin, Silvia,Brenna, Elisabetta,Frigoli, Samuele,Fronza, Giovanni,Fuganti, Claudio,Mussida, Daniele

, p. 3113 - 3117 (2008/02/09)

Samples of methamphetamine, prepared according to the most common synthetic pathways, were submitted to natural-abundance 2H NMR spectroscopy. The deuterium content at the various sites of the molecule was found to depend on its synthetic history. The technique provides a chemical fingerprint of methamphetamine samples and can give hints to trace back the starting materials and the synthetic procedures.

Substituted sulfonamido compounds, photosensitive elements, film units, and processes for retaining a photographic image with same

-

, (2008/06/13)

A nondiffusible sulfonamido compound which is alkali-cleavable upon oxidation to release a diffusible photographically useful material, said nondiffusible sulfonamido compound having the formula: STR1 wherein: (a) R1 is alkyl, aryl sulfamyl, carbamyl, carbonamido, carbonyl, carbonyloxy or sulfonamido; (b) R2 is alkyl having from 1 to 18 carbon atoms, aryl, or alkylphenyl having from 7 to 12 carbon atoms; (c) R3 and R4 are independently alkyl, or aryl, or R3 and R4, taken together, form a fused carbocyclic or heterocyclic ring; (d) NHSO2 PUG represents a sulfonamido group; (e) PUG represents a photographically useful group; and (f) at least one of R1, R2, R3, or R4, or any combination thereof, provides a molecular configuration of such size or shape as to render the compound nondiffusible under alkaline processing conditions, is useful as redox releaser in photosensitive elements, photographic film units and in processes for transferring and/or retaining a photographic image in color diffusion transfer units. These elements, film units and processes produce retained color images having substantially reduced minimum densities.

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