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89218-21-3

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89218-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89218-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,2,1 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 89218-21:
(7*8)+(6*9)+(5*2)+(4*1)+(3*8)+(2*2)+(1*1)=153
153 % 10 = 3
So 89218-21-3 is a valid CAS Registry Number.

89218-21-3Relevant articles and documents

PREPARATION OPTICALLY ACTIVE α,β-UNSATURATED PHOSPHONATES AND SULFOXIDES FROM PHENYLSULFENYLMETHANEPHOSPHONATES

Koizumi, Toru,Iwata, Masanori,Tanaka, Nobuyuki,Yoshii, Eiichi

, p. 4198 - 4201 (2007/10/02)

The first preparation of optically active α,β-unsaturated phosphonyl compounds from chiral phenylsulfenylmethanephosphonates 1 and 2 has been described.The optically active α,β-unsaturated sulfoxides have also been prepared by the Emmons-Horner reaction of phenylsulfinylmethanephosphonamidate 4 with several aldehydes.KEYWORDS - chiral α,β-unsaturated phosphonate; chiral α,β-unsaturated sulfoxide; absolute configuration; chirality transfer reaction

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