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198489-54-2

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198489-54-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198489-54-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,4,8 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 198489-54:
(8*1)+(7*9)+(6*8)+(5*4)+(4*8)+(3*9)+(2*5)+(1*4)=212
212 % 10 = 2
So 198489-54-2 is a valid CAS Registry Number.

198489-54-2Downstream Products

198489-54-2Relevant articles and documents

Syntheses of novel group 15 and 16 thieno[2,3-b]-, thieno[3,4-b]-, and thieno [3,2-b]-heteroles

Yasuike, Shuji,Kurita, Jyoji,Tsuchiya, Takashi

, p. 1891 - 1894 (2007/10/03)

Group 15 (P, As and Sb) and group 16 (S, Se, and Te) thieno[2,3-b]- (1), thieno[3,4-b]- (2), and thieno[3,2-b]heteroles (3) were prepared from the corresponding 1,4-dilithium intermediates, derived from (Z)-(β-bromo-β-trimethylsilylvinyl)thiophenes (6), (10), and (13) by treatment with tert-butyllithium, respectively. These thienoheteroles obtained are novel fused heterocyclicring systems, except for thienothiophenes and thienoselenophenes.

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