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134860-57-4

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134860-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134860-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,8,6 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 134860-57:
(8*1)+(7*3)+(6*4)+(5*8)+(4*6)+(3*0)+(2*5)+(1*7)=134
134 % 10 = 4
So 134860-57-4 is a valid CAS Registry Number.

134860-57-4Relevant articles and documents

ASYMMETRIC ALDOL REACTIONS USING CHIRAL BORON REAGENTS: APPLICATION TO THE SYNTHESIS OF TIRANDAMYCIN A

Paterson, Ian,Lister, M. Anne,Ryan, Glen R.

, p. 1749 - 1752 (2007/10/02)

The bicyclic acetal 1, a key intermediate in previous synthetic studies on tirandamycin A, has been prepared in enantiomerically pure form starting from the (R)-ethylketone 2 and the aldehyde 3.A reagent controlled aldol reaction using (-)-(Ipc)2BOTf sele

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