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91821-71-5

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91821-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91821-71-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,2 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91821-71:
(7*9)+(6*1)+(5*8)+(4*2)+(3*1)+(2*7)+(1*1)=135
135 % 10 = 5
So 91821-71-5 is a valid CAS Registry Number.

91821-71-5Downstream Products

91821-71-5Relevant articles and documents

One-pot formation and derivatization of di- and triynes based on the Fritsch-Buttenberg-Wiechell rearrangement

Luu, Thanh,Morisaki, Yasuhiro,Cunningham, Nina,Tykwinski, Rik R.

, p. 9622 - 9629 (2007)

(Chemical Equation Presented) A divergent, one-pot synthesis of functionalized polyynes has been developed. Beginning with the appropriately substituted dibromoolefinic precursor, a carbenoid Fritsch-Buttenberg-Wiechell (FBW) rearrangement is used to gene

A one-pot synthesis and functionalization of polyynes

Morisaki, Yasuhiro,Luu, Thanh,Tykwinski, Rik R.

, p. 689 - 692 (2007/10/03)

A one-pot synthesis and derivatization of diynes and triynes is reported. The polyyne framework is formed from a dibromoolefin precursor based on a carbenoid rearrangement, and the resulting Li-acetylide is then trapped in situ with an electrophile to pro

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