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219781-91-6

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219781-91-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219781-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,7,8 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 219781-91:
(8*2)+(7*1)+(6*9)+(5*7)+(4*8)+(3*1)+(2*9)+(1*1)=166
166 % 10 = 6
So 219781-91-6 is a valid CAS Registry Number.

219781-91-6Downstream Products

219781-91-6Relevant articles and documents

Synthesis of benzo[c]phenanthridine alkaloids, using a novel palladium-phosphine combination system - Pd(OAc)2, DPPP, and Bu3P

Harayama, Takashi,Akiyama, Toshihiko,Nakano, Yuichiro,Shibaike, Kentaro,Akamatsu, Hisashi,Hori, Akihiro,Abe, Hitoshi,Takeuchi, Yasuo

, p. 237 - 241 (2007/10/03)

Total synthesis of several benzo[c]phenanthridine alkaloids was accomplished via an aryl-aryl coupling reaction using a novel Pd reagent prepared from Pd(OAc)2 DPPP, and Bu3P. This is a versatile method for the coupling reactions of not only aryl triflates and arenes but also aryl halides and arenes.

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