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56715-37-8

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56715-37-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56715-37-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,7,1 and 5 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 56715-37:
(7*5)+(6*6)+(5*7)+(4*1)+(3*5)+(2*3)+(1*7)=138
138 % 10 = 8
So 56715-37-8 is a valid CAS Registry Number.

56715-37-8Relevant articles and documents

Spontaneous resolution amongst chiral ortho-cyanophenyl glycerol derivatives: an effective preferential crystallization approach to a single enantiomer of the β-adrenoblocker bunitrolol

Bredikhina, Zemfira A.,Akhatova, Flyura S.,Zakharychev, Dmitry V.,Bredikhin, Alexander A.

, p. 1429 - 1434 (2008/12/22)

The β-adrenoblocker bunitrolol 1 as well as intermediate cyclic sulfate 6 and glycidyl ether 8 have been prepared in enantiopure form by starting from enantiopure o-cyanophenyl glycerol ether 2 by an entrainment resolution procedure. Thermal investigations reveal that 1·HCl forms a moderately stable racemic compound, whereas 2, 6 and 8 are conglomerate forming substances potentially capable of entrainment resolution. Some chemical and chiroptical characteristics for bunitrolol and possible intermediates in its synthesis were corrected, and configurations were verified with the configuration of 1·HCl.

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