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857665-62-4

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857665-62-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 857665-62-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,6,6 and 5 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 857665-62:
(8*8)+(7*5)+(6*7)+(5*6)+(4*6)+(3*5)+(2*6)+(1*2)=224
224 % 10 = 4
So 857665-62-4 is a valid CAS Registry Number.

857665-62-4Downstream Products

857665-62-4Relevant articles and documents

Stereospecific C-S bond formation from chiral tertiary alcohols by quinone-mediated oxidation-reduction condensation using alkyl diphenylphosphinites and its application to the synthesis of a chiral tertiary thiol

Ikegai, Kazuhiro,Pluempanupat, Wanchai,Mukaiyama, Teruaki

, p. 780 - 790 (2007/10/03)

Oxidation-reduction condensation between 2-sulfanyl-1,3-benzothiazole (Btz-SH) and the alkyl diphenylphosphinites 1, prepared from tertiary alcohols, proceeded smoothly in the presence of 2,6-di-t-butyl-1,4-benzoquinone (DBBQ) and the corresponding S-alky

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