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109878-03-7

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109878-03-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109878-03-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,8,7 and 8 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109878-03:
(8*1)+(7*0)+(6*9)+(5*8)+(4*7)+(3*8)+(2*0)+(1*3)=157
157 % 10 = 7
So 109878-03-7 is a valid CAS Registry Number.

109878-03-7Downstream Products

109878-03-7Relevant articles and documents

PHOTOCHEMISTRY OF UNSATURATED LACTONES. 2. PHOTOANNELATION OF 2-ACETYL-3,4,4-TRIMETHYL-2-BUTEN-4-OLIDE BY TERMINAL ALKYNES

Avetisyan, A. A.,Margaryan, A. Kh.,Nalbandyan, G. K.,Avetisyan, T. V.

, p. 1063 - 1068 (1986)

The photochemical cycloaddition of 2-acetyl-3,4,4-trimethyl-2-buten-4-olide to 1-heptyne and 1-chloro-2-propyne was carried out.The reaction gives isomeric cycloadducts of the "head to head" and "head to tail" types.The influence of solvent on the directivity of the reaction was investigated.The possibility was showen of using the cycloadducts obtained in the synthesis of difficulty available polyfunctionally substituted butanolides and heterocyclic compounds containing a spirocyclobutene fragment.

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