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90833-01-5

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90833-01-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90833-01-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,8,3 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90833-01:
(7*9)+(6*0)+(5*8)+(4*3)+(3*3)+(2*0)+(1*1)=125
125 % 10 = 5
So 90833-01-5 is a valid CAS Registry Number.

90833-01-5Downstream Products

90833-01-5Relevant articles and documents

Synthesis of 3-Ethoxycarbonyl-3-buten-4-olides and 3-Ethoxycarbonyl-4-butanolides

Gaudemar-Bardone, Francoise,Mladenova, Margarita,Couffignal, Rene

, p. 1043 - 1047 (2007/10/02)

This paper describes a synthesis of 3-acyl-2-alkyl-3-ethoxycarbonylpropanoic acids from ethyl 2-oxoalkanoates and 2-bromoalkanoic acids.These acids are cyclised via intramolecular dehydratation to give 2,4-dialkyl-3-ethoxycarbonyl-3-buten-4-olides or are

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