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1337921-91-1

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1337921-91-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1337921-91-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,7,9,2 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1337921-91:
(9*1)+(8*3)+(7*3)+(6*7)+(5*9)+(4*2)+(3*1)+(2*9)+(1*1)=171
171 % 10 = 1
So 1337921-91-1 is a valid CAS Registry Number.

1337921-91-1Downstream Products

1337921-91-1Relevant articles and documents

Synthesis of thiophene-type S, S-and N, S-ligands derived from (+)-nopinone

Baldino, Salvatore,Chelucci, Giorgio,Poddighe, Roberto,Sechi, Barbara

, p. 2441 - 2444 (2011)

The new chiral thiophene 3 was prepared from (+)-nopinone via a de novo construction of the thiophene nucleus. From compound 3 four new S,S- and N,S-ligands, namely the C1-symmetric 2-(thiophen-2-yl)pyridine 7 and the C2-symmetric 2,2-bithiophene 5, 2,6-di(thiophen-2-yl)pyridine 8, and 2,6-di(thiophen-2-yl)thiophene 9 were synthesized. Georg Thieme Verlag Stuttgart New York.

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