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170378-90-2

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170378-90-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170378-90-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,3,7 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 170378-90:
(8*1)+(7*7)+(6*0)+(5*3)+(4*7)+(3*8)+(2*9)+(1*0)=142
142 % 10 = 2
So 170378-90-2 is a valid CAS Registry Number.

170378-90-2Relevant articles and documents

Heteroorganic betaines 1. Synthesis of betaines containing the +P-C-Si-S- and +P-C-C-S- fragments and their characterization by multinuclear NMR spectroscopy

Borisova, I. V.,Zemlyanskii, N. N.,Shestakova, A. K.,Ustynyuk, Yu. A.,Chernyshev, E. A.

, p. 920 - 928 (2007/10/03)

A method for the synthesis of a new class of betaines, viz., R13P+CR2R3SiR4S-, was developed. The experimental evidence for the intermediate formation of betaines R13P+-CR2R3-CR4R5-S- in the Wittig reaction for a series of thiocarbonyl compounds was obtained. A comparative analysis of the NMR spectra of betaines containing the +P-C-Si-S- and +P-C-C-S- fragments was performed.

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