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138825-21-5

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138825-21-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138825-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,2 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138825-21:
(8*1)+(7*3)+(6*8)+(5*8)+(4*2)+(3*5)+(2*2)+(1*1)=145
145 % 10 = 5
So 138825-21-5 is a valid CAS Registry Number.

138825-21-5Downstream Products

138825-21-5Relevant articles and documents

Two routes of tantalum-catalyzed alkene carbomagnesiation with ethyl Grignard reagents

Sultanov, Rifkat M.,Dzhemilev, Usein M.,Samoilova, Elena V.,Ismagilov, Ruslan R.,Khalilov, Leonard M.,Popod'Ko, Natal'Ya R.

experimental part, p. 5 - 8 (2012/09/07)

Carbomagnesiation of 1-alkenes with EtMgX (X = Cl, Et) has been implemented in the presence of TaCl5 as a catalyst to give a mixture of 2-(R-substituted)- and 3-(R-substituted)-n-butylmagnesiums (5:4 ratio) ina total yield of 98%. The probable

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