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128720-40-1

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128720-40-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128720-40-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,2 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128720-40:
(8*1)+(7*2)+(6*8)+(5*7)+(4*2)+(3*0)+(2*4)+(1*0)=121
121 % 10 = 1
So 128720-40-1 is a valid CAS Registry Number.

128720-40-1Downstream Products

128720-40-1Relevant articles and documents

Allylation of α-Diketones by Photochemical Reactions with Allylic Stannanes. Regiochemistry of Introduced Allylic Group

Takuwa, Akio,Nishigaichi, Yutaka,Yamashita, Koichi,Iwamoto, Hidetoshi

, p. 639 - 642 (2007/10/02)

Irradiation of an acetonitrile solution of benzils and acenaphthenequinone in the presence of allylic stannanes afforded homoallylic alcohols in good yields.In the reaction with unsymmetric allylstannanes, the allylic groups were introduced predominantly at α-positions.The completely regioselective introduction could be achieved by the irradiation in the presence of NaOH or CoCl2 as an additive.

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