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90237-79-9

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90237-79-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90237-79-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,2,3 and 7 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 90237-79:
(7*9)+(6*0)+(5*2)+(4*3)+(3*7)+(2*7)+(1*9)=129
129 % 10 = 9
So 90237-79-9 is a valid CAS Registry Number.

90237-79-9Downstream Products

90237-79-9Relevant articles and documents

Amino Acids, 2. N-Acetyl α,β-Didehydro α-Amino Acid Esters from α-Azidocarboxylic Acid Esters and Acetic Anhydride by Nitrogen Elimination with Rhenium Catalysts

Effenberger, Franz,Beisswenger, Thomas

, p. 1497 - 1512 (2007/10/02)

α-Azidocarboxylic acid esters 2 react with acetic anhydride in presence of catalytic amounts of rhenium heptasulfide and - if necessary - by addition of hydrochloric acid to give N-acetyl 3 or/and N,N-diacetyl-α,β-didehydro-α-amino acid esters 4 in very g

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