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691850-91-6

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691850-91-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 691850-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,8,5 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 691850-91:
(8*6)+(7*9)+(6*1)+(5*8)+(4*5)+(3*0)+(2*9)+(1*1)=196
196 % 10 = 6
So 691850-91-6 is a valid CAS Registry Number.

691850-91-6Downstream Products

691850-91-6Relevant academic research and scientific papers

Versatile Use of Hindered Oxalates for the Stereoselective Preparation of Novel 11-Modified Androst-5-ene Derivatives

Lecomte, Vincent,Stephan, Elie,Rager, Marie-Noelle,Jaouen, Gerard

, p. 3216 - 3219 (2004)

The 11α- and 11β-modified androst-5-ene derivatives 3a,b as well as the exo- and endocyclic dehydrated compounds 4a-c and 5b-c were produced using the oxalate derivatives of the highly hindered 11β-hydroxyandrost-5-enes 1a-c. The 11-tetrahydrofuran deriva

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