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735231-40-0

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735231-40-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 735231-40-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,3,5,2,3 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 735231-40:
(8*7)+(7*3)+(6*5)+(5*2)+(4*3)+(3*1)+(2*4)+(1*0)=140
140 % 10 = 0
So 735231-40-0 is a valid CAS Registry Number.

735231-40-0Relevant articles and documents

Improved synthetic method of (R)-1-aryl-2-propylamine

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Paragraph 0035; 0036; 0037, (2018/07/30)

The invention provides an improved synthetic method of (R)-1-aryl-2-propylamine. The improved synthetic method comprises the following steps of: adopting 1-arylacetone as a raw material, adding (R)-1-phenylethylamine, carrying out reductive amination reaction with hydrogen under a common action of a Lewis acid additive and a transitional metal hydrogenation catalyst; carrying out Pd/C catalytic hydrogenation on an obtained intermediate to remove phenethyl on nitrogen and thus obtaining (R)-1-aryl-2-propylamine. The improved synthetic method provided by the invention has the beneficial effectsthat the operation is simple, the adopted Lewis acid additive is low in cost and easy in obtaining, the yield and the enantioselectivity of a product are high, and the application value for industrialsynthesis of (R)-1-aryl-2-propylamine is very high.

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