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1570796-98-3

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1570796-98-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1570796-98-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,7,0,7,9 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1570796-98:
(9*1)+(8*5)+(7*7)+(6*0)+(5*7)+(4*9)+(3*6)+(2*9)+(1*8)=213
213 % 10 = 3
So 1570796-98-3 is a valid CAS Registry Number.

1570796-98-3Downstream Products

1570796-98-3Relevant academic research and scientific papers

Asymmetric a-hydroxylation of a lactone with vinylogous pyridone by using a guanidine-urea bifunctional organocatalyst: Catalytic enantioselective synthesis of a key intermediate for (20S)-camptothecin analogues

Watanabe, Tatsuya,Odagi, Minami,Furukori, Kota,Nagasawa, Kazuo

, p. 591 - 597 (2014/04/03)

We have developed a catalytic asymmetric synthesis of (S)-4-ethyl-6,6- (ethylenedioxy)-7,8-dihydro-4-hydroxy- 1H-pyrano[3,4-f]indolizine-3,10(4H)dione (5a), a synthetic intermediate for (20S)-camptothecin analogues. A key step in this synthesis is an asym

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