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138761-50-9

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138761-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138761-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,6 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138761-50:
(8*1)+(7*3)+(6*8)+(5*7)+(4*6)+(3*1)+(2*5)+(1*0)=149
149 % 10 = 9
So 138761-50-9 is a valid CAS Registry Number.

138761-50-9Downstream Products

138761-50-9Relevant articles and documents

Remote controlled nucleophilicity, 2: Lithiated C(α)-substituted 4-methylpyridines

Anders,Opitz,Bauer

, p. 1221 - 1227 (2007/10/02)

C(α)-substituted 4-methylpyridines have been N-lithiated and reacted with chlorotrimethylsilane and other electrophiles. The lithiated C(α)-NMe2 substituted intermediate shows an interesting dichotomy of behavior towards electrophiles: It represents the borderline between compounds for which an extreme N or C(α) regionucleophilicity is observed.

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