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127897-49-8

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127897-49-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127897-49-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,8,9 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 127897-49:
(8*1)+(7*2)+(6*7)+(5*8)+(4*9)+(3*7)+(2*4)+(1*9)=178
178 % 10 = 8
So 127897-49-8 is a valid CAS Registry Number.

127897-49-8Downstream Products

127897-49-8Relevant articles and documents

SYNTHESIS OF α-DAMASCONE AND 1-(2,6,6-TRIMETHYL-2-TETRAHYDROPYRANYL)-2-ALKEN-1-ONES

Erman, M. B.,Pribytkova, I. M.,Gulyi, S. E.,Bogomolova, O. A.,Cherkaev, G. V.,et al.

, p. 2294 - 2301 (2007/10/02)

α-Damascone was obtained by the reaction of α-cyclocitral with allyl bromide in the presence of zinc, followed by oxidation of the obtained alcohol with chromic acid to the ketone and isomerization of the latter with triethylamine as catalyst.The analogous synthesis of β-damascone from 1-(4,6,6-trimethyl-1,3-cyclohexadienyl)-2-buten-1-one was impossible on account of complications at the oxidation stage.The rearrangement of the acetylenic alcohols with polyvanadioorganosiloxane as catalyst led to 1-(2,6,6-trimethyl-2-tetrahydropyranyl)-2-alken-1-ones.

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