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138643-65-9

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138643-65-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138643-65-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,4 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138643-65:
(8*1)+(7*3)+(6*8)+(5*6)+(4*4)+(3*3)+(2*6)+(1*5)=149
149 % 10 = 9
So 138643-65-9 is a valid CAS Registry Number.

138643-65-9Downstream Products

138643-65-9Relevant articles and documents

N,N-dimethylchlorosulfitemethaniminium chloride as a cyclodehydrating agent: An efficient one-pot preparation of 4-methyl-2-phenyl-Δ2-oxazolin-5-one and its reactions with various imines and bis-imines

Singh, Satyendra P,Prajapati, Dipak,Sandhu, Jagir S

, p. 1033 - 1036 (2007/10/02)

N,N-Dimethylchlorosulfitemethaniminium chloride prepared from thionylchloride and dimethylformamide in dry benzene at ambient temperature was found to be an efficient and mild cyclodehydrating agent of N-benzoyl amino acids for the synthesis of various β-

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