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211796-91-7

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211796-91-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 211796-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,7,9 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 211796-91:
(8*2)+(7*1)+(6*1)+(5*7)+(4*9)+(3*6)+(2*9)+(1*1)=137
137 % 10 = 7
So 211796-91-7 is a valid CAS Registry Number.

211796-91-7Downstream Products

211796-91-7Relevant articles and documents

Synthesis of Thiophene-Substituted 3H-Naphtho[2,1-b]pyrans, Precursors of Photomodulated Materials

Moustrou, Corinne,Rebière, Nicole,Samat, André,Guglielmetti, Robert,Yassar, Abd Errahim,Dubest, Roger,Aubard, Jean

, p. 1293 - 1302 (2007/10/03)

The synthesis of 3H-naphtho[2,1-b]pyrans 9-21 linked to a thiophene moiety is described. Two different synthetic approaches were applied to prepare these novel functionalized compounds, and their spectrokinetic properties in solution are reported.

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