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139669-81-1

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139669-81-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139669-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,6 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139669-81:
(8*1)+(7*3)+(6*9)+(5*6)+(4*6)+(3*9)+(2*8)+(1*1)=181
181 % 10 = 1
So 139669-81-1 is a valid CAS Registry Number.

139669-81-1Downstream Products

139669-81-1Relevant articles and documents

Efficient Synthesis of 2-Vinyl-γ-butyrolactones and 2-Vinyl-γ-butyrolactams by Palladium-Catalyzed Decarboxylative Carbonylation

Bando, Takashi,Tanaka, Shuji,Fugami, Keigo,Yoshida, Zen-ichi,Tamaru, Yoshinao

, p. 97 - 110 (2007/10/02)

4-Vinyl-1,3-dioxan-2-ones (cyclic carbonates) undergo decarboxylation-carbonylation by the catalysis of Pd(0) species under CO (in most cases, 1 atm) to provide 2-vinyl-γ-butyrolactones in good yields.The course of the reaction of 6-vinyltetrahydro-2H-1,3

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