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344325-11-7

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344325-11-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 344325-11-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,3,2 and 5 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 344325-11:
(8*3)+(7*4)+(6*4)+(5*3)+(4*2)+(3*5)+(2*1)+(1*1)=117
117 % 10 = 7
So 344325-11-7 is a valid CAS Registry Number.

344325-11-7Upstream product

344325-11-7Relevant articles and documents

Stereospecific Alkylation of 3,5,5-Trisubstituted-4-hydroxy-1-p-tosyl-2-pyrazolines by Trimethylaluminum. An Efficient Synthesis of 3,3,5,5-Tetrasubstituted-1-pyrazolin-4-ones

Pirkle, William H.,Hoover, Dennis J.

, p. 3407 - 3413 (2007/10/02)

Isomeric p-tosylpyrazolines 5 and 6 are obtained in high yield by cyclization of the tosylhydrazones of various β,β-disubstituted-α,β-epoxy ketones 4.Oxidation of these mixtures to pyrazolones 9 followed by selective reduction affords isomers 5.Reaction o

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