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900504-66-7

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900504-66-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 900504-66-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,0,5,0 and 4 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 900504-66:
(8*9)+(7*0)+(6*0)+(5*5)+(4*0)+(3*4)+(2*6)+(1*6)=127
127 % 10 = 7
So 900504-66-7 is a valid CAS Registry Number.

900504-66-7Relevant articles and documents

Total synthesis of dictyodendrins A-E

Tokuyama, Hidetoshi,Okano, Kentaro,Fujiwara, Hideto,Noji, Toshiharu,Fukuyama, Tohru

, p. 560 - 572 (2011/10/03)

A highly efficient total synthesis of dictyodendrins A-E was accomplished. The synthesis features a novel benzyne-mediated one-pot indoline formation/cross-coupling sequence for the construction of a highly substituted key indoline intermediate. Peripheral substituents were introduced onto this intermediate in a modular fashion to complete the total synthesis of dictyodendrins A-E. A benzyne-mediated one-pot indoline formation/cross-coupling sequence is used for the construction of a highly substituted common indole intermediate. The peripheral substituents were introduced using a Friedel-Crafts reaction on the indole intermediate in a modular fashion to complete the total synthesis. Copyright

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