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905918-91-4

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905918-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 905918-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,5,9,1 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 905918-91:
(8*9)+(7*0)+(6*5)+(5*9)+(4*1)+(3*8)+(2*9)+(1*1)=194
194 % 10 = 4
So 905918-91-4 is a valid CAS Registry Number.

905918-91-4Downstream Products

905918-91-4Relevant articles and documents

Rapid and efficient synthesis of (R)-aryloxypropionic acid esters under microwave irradiation

Ochal, Zbigniew,Durka, Krzysztof,Banach, Lukasz

experimental part, p. 3209 - 3213 (2010/12/24)

A series of (R)-(+)-ethyl aryloxypropionates (4a-4p) have been synthesized by the reaction of substituted phenols with ethyl (S)-(-)-tosyloxy lactate under the conditions of microwave irradiation and without solvents. The reaction conditions have been optimized. A good method for the preparation of (R)-(+)-ethyl aryloxypropionate was developed, with good yields, high enantiomer excess, short reaction times, easy workup, and simple procedure. Copyright Taylor & Francis Group, LLC.

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