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146547-12-8

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146547-12-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 146547-12-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,6,5,4 and 7 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 146547-12:
(8*1)+(7*4)+(6*6)+(5*5)+(4*4)+(3*7)+(2*1)+(1*2)=138
138 % 10 = 8
So 146547-12-8 is a valid CAS Registry Number.

146547-12-8Relevant articles and documents

Asymmetric hydrogenation of β-keto esters

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Page column 7, (2008/06/13)

Enantiomerically pure β-hydroxy esters are prepared by a process in which β-keto esters are reacted with hydrogen in the presence of catalysts of the formula LRuX2where X is halogen, acetate, allyl, methallyl, 2-phenylallyl, perchlorate, trifluoroacetate, tetrafluoroborate, hexafluoroantimonate, hexafluorophosphate, hexafluoroarsenate or trichloroacetate, L is a bidentate phospholane of the formula I ?where B=a bridging link with 1-5 carbon atoms between the two phosphorus atoms, R1=H, C1-C6-alkyl, aryl, alkylaryl or SiR23, R2=alkyl or aryl, m=0 or 1, R3=H or OR4, and R4=R1, with the proviso that if m=1 then R3=H and if m=0 then R3≠ H.

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