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133732-57-7

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133732-57-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133732-57-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,3 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 133732-57:
(8*1)+(7*3)+(6*3)+(5*7)+(4*3)+(3*2)+(2*5)+(1*7)=117
117 % 10 = 7
So 133732-57-7 is a valid CAS Registry Number.

133732-57-7Relevant articles and documents

Enantioselective epoxidation of unfunctionalized olefins using chiral (salen)manganese(III) complexes

Irie,Noda,Ito,Katsuki

, p. 1055 - 1058 (2007/10/02)

Chiral (salen)manganese(III) complexes (3 and 4) were prepared and used for the enantioselective epoxidation of unfunctionalized olefins. The highest enantioselectivity of 48% ee for the catalytic epoxidation of (E)-stilbene was realized by using 3 as a catalyst though much lower enantioselectivity (7% ee) was obtained for that of (E)-1-phenyl-1-propene. In the epoxidation of (Z)-olefins, enantioselectivities were in the range of 68~72% ee by using 3 as a catalyst and 60% ee by using 4.

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