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21782-48-9

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21782-48-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21782-48-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,8 and 2 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21782-48:
(7*2)+(6*1)+(5*7)+(4*8)+(3*2)+(2*4)+(1*8)=109
109 % 10 = 9
So 21782-48-9 is a valid CAS Registry Number.

21782-48-9Downstream Products

21782-48-9Relevant articles and documents

Reaction of alkene-zirconocene complexes and cyclic enol ethers through new reaction pathways

Barluenga, Jose,Alvarez-Rodrigo, Lucia,Rodriguez, Felix,Fananas, Francisco J.

, p. 3932 - 3935 (2004)

Unexpected results are obtained on treatment of alkene-zirconocene complexes with cyclic enol ethers. The ring size of the enol ether makes the reaction proceed through different mechanisms allowing Zalkenols to be prepared from furan derivatives and cycl

LONG-ACTING CONTRACEPTIVE AGENTS: CYCLOPROPYL AND CYCLOBUTYL ESTERS OF NORETHISTERONE

Shafiee, A.,Vossoghi, M.,Savabi, F.,Vlahov, R.,Tarpanov, V.,et al.

, p. 291 - 308 (2007/10/02)

Several esters of norethisterone (17α-ethynyl-17β-hydroxyestr-4-en-3-one) with carboxylic acids containing a cyclopropyl or cyclobutyl ring have been synthesized and the stereochemistries of the side-chains determined.

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