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72681-70-0

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72681-70-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72681-70-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,6,8 and 1 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 72681-70:
(7*7)+(6*2)+(5*6)+(4*8)+(3*1)+(2*7)+(1*0)=140
140 % 10 = 0
So 72681-70-0 is a valid CAS Registry Number.

72681-70-0Relevant articles and documents

SYNTHESIS OF CHIRAL DEPSIPEPTIDE BUILDING BLOCK BY THE ASYMMETRIC REDUCTION OF N-(α-KETOACYL)-α-AMINO ESTERS

Ojima, Iwao,Tanaka, Toshiyuki,Kogure, Tetsuo

, p. 823 - 826 (1981)

Asymmetric reduction of N-(α-ketoacyl)-α-amino esters was performed by using homogeneous hydrosilylation and hydrogenation catalyzed by rhodium(I) complexes.The asymmetric hydrosilylation achieved good to high stereoselectivities giving the corresponding

SYNTHESIS OF CHIRAL OLIGOPEPTIDES BY MEANS OF CATALYTIC ASYMMETRIC HYDROGENATION OF DEHYDROPEPTIDES

Ojima, Iwao,Yoda, Noriko,Yatabe, Momoko,Tanaka, Toshiyuki,Kogure, Tetsuo

, p. 1255 - 1268 (2007/10/02)

Asymmetric hydrogenation of Ac-ΔTyr(Ac)-(S)-Ala-Gly-OMe (6), Ac-ΔTyr(Ac)-(R)-Ala-Gly-(S)-Phe-OMe (7), Ac-ΔPhe-NH-CH(R)-CH2-OCH2Ph (10), HCO-ΔPhe-(S)-Leu-OMe (16), X-AA-ΔPhe-AA'-OMe ( 5: X=tBOC, CBZ, CF3CO; AA, AA'= α-amino acid ), and t

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