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133843-98-8

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133843-98-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133843-98-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,4 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 133843-98:
(8*1)+(7*3)+(6*3)+(5*8)+(4*4)+(3*3)+(2*9)+(1*8)=138
138 % 10 = 8
So 133843-98-8 is a valid CAS Registry Number.

133843-98-8Relevant articles and documents

Synthesis of Casein-Related Peptides and Phosphopeptides. X A Modified Method for the Synthesis of Ser(P)-Containing Peptides Through 4-Bromobenzyl Phosphate Protection

Perich, John W.,Johns, R. B.

, p. 389 - 396 (2007/10/02)

The three 4-halobenzyl phosphoramidite reagents di(4-fluorobenzyl) N,N-diisopropylphosphoramidite, di(4-chlorobenzyl) N,N-diisopropylphosphoramidite and di(4-bromobenzyl) N,N-diethylphosphoramidite were prepared and used for the efficient phosphite-triest

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