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1040503-20-5

1040503-20-5

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1040503-20-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1040503-20-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,0,5,0 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1040503-20:
(9*1)+(8*0)+(7*4)+(6*0)+(5*5)+(4*0)+(3*3)+(2*2)+(1*0)=75
75 % 10 = 5
So 1040503-20-5 is a valid CAS Registry Number.

1040503-20-5Downstream Products

1040503-20-5Relevant articles and documents

13C NMR as a general tool for the assignment of absolute configuration

Louzao, Iria,Seco, Jose Manuel,Quinoa, Emilio,Riguera, Ricardo

supporting information; experimental part, p. 7903 - 7905 (2010/12/19)

13C NMR, alone or in combination with 1H NMR, allows the assignment of the absolute configuration of chiral alcohols, amines, carboxylic acids, thiols, cyanohydrins, sec,sec-diols and sec,sec-aminoalcohols, derivatized with appropriate chiral auxiliaries. This extends the assignment possibilities of NMR to fully deuterated and to nonproton containing compounds.

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