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159977-40-9

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159977-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159977-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,9,7 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 159977-40:
(8*1)+(7*5)+(6*9)+(5*9)+(4*7)+(3*7)+(2*4)+(1*0)=199
199 % 10 = 9
So 159977-40-9 is a valid CAS Registry Number.

159977-40-9Downstream Products

159977-40-9Relevant articles and documents

FORMATION OF BF2 CHELATES IN ACYLATION OF RESORCINOL AND 4-CYCLOHEXYLRESORCINOL WITH CARBOXYLIC ACIDS IN THE PRESENCE OF BF3-ETHER COMPLEX

Panasenko, A. I.,Polyanskaya, N. L.,Starkov, S. P.

, p. 611 - 613 (2007/10/02)

New chelates, 1-acyl-2-difluoroboroxy-4-hydroxybenzene and 1-acyl-2-difluoroboroxy-4-hydroxy-5-cyclohexylbenzene, were synthesized by acylation of resorcinol and 4-cyclohexylresorcinol with acetic, propionic, butyric, valeric, and phenylacetic acids, catalyzed by BF3*OEt2.On heating with aqueous alcohol, the chelates are hydrolyzed to the corresponding ketones.

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