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79344-53-9

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79344-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 79344-53-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,3,4 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 79344-53:
(7*7)+(6*9)+(5*3)+(4*4)+(3*4)+(2*5)+(1*3)=159
159 % 10 = 9
So 79344-53-9 is a valid CAS Registry Number.

79344-53-9Downstream Products

79344-53-9Relevant articles and documents

Synthesis of 4-Substituted Coumarins, 3a,8a-Dihydrofurobenzofuran-2(3H)-ones and 2,3,3a,8a-Tetrahydrobenzofuropyrrol-2(1H)-ones

Joshi, S. D.,Usgaonkar, R. N.

, p. 399 - 402 (2007/10/02)

Oxidation of methylcoumarins (I) with SeO2 shows that the methyl group in position-4 is selectively oxidised to CHO but methyl groups in other positions remain unaffected.However, a bulky substituent in position-3 hampers oxidation of CH3 in position-4.A large number of derivatives (III to XIV) of II have been prepared by making use of the reactivity of CHO function. 3a,8a-Dihydrofurobenzofuran-2(3H)-ones (XVa-c) and 2,3,3a,8a-tetrahydrobenzofuropyrrol-2(1H)-ones (XVIa-c) have been synthesised by the action of zinc and acetic acid on II and III, respectively.

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