Cas 137252-48-3,Toluene-4-sulfonic acid 3-methoxymethyl-3-methyl-3,3a,4,7-tetrahydro-indazol-7a-ylmethyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 137252-48-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,5 and 2 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 137252-48:
(8*1)+(7*3)+(6*7)+(5*2)+(4*5)+(3*2)+(2*4)+(1*8)=123
123 % 10 = 3
So 137252-48-3 is a valid CAS Registry Number.

137252-48-3Upstream product

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137252-48-3Relevant academic research and scientific papers

Mechanism of the Cyclopropane "Walk" Rearrangement: Synthesis and Properties of an Optically Active Diazoalkane-Toluene Adduct; a Highly Stereoselective N2 Elimination

Klaerner, Frank-Gerrit,Band, Ruediger,Glock, Volker,Koenig, Wilfried A.

, p. 197 - 208 (2007/10/02)

The synthesis and the thermal and photochemical behavior of the optically active 2-diazo-1-methoxypropane-toluene adduct 3 are reported.The N2 elimination of 3 occurs with one and the same stereochemical course upon thermolysis as well as direct photolysi

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