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139025-77-7

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139025-77-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139025-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,2 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139025-77:
(8*1)+(7*3)+(6*9)+(5*0)+(4*2)+(3*5)+(2*7)+(1*7)=127
127 % 10 = 7
So 139025-77-7 is a valid CAS Registry Number.

139025-77-7Downstream Products

139025-77-7Relevant articles and documents

NiCl2(PPh3)2-Zn Promoted Deallyloxycarbonylative Directed Aldol Reaction of Allyl β-Keto Carboxylates with Aldehydes th β-Hydroxy Ketones

Nokami, Junzo,Konishi, Haruhisa,Matsuura, Hiroyuki

, p. 2023 - 2026 (2007/10/02)

Regio- and chemospecific deallyloxycarbonylative aldol reaction of allyl (or -lic) α,α-disubstituted β-keto carboxylate with aldehyde was effectively promoted by Ni(0) (NiCl2(PPh3)2-Zn), in which the allyloxycarbonyl group (-COOCH2CH=CH2) was replaced to 1-hydroxyalkyl group (-CH(OH)R, R=alkyl, vinyl, aryl) under mild reaction conditions.

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