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156643-77-5

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156643-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156643-77-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,4 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 156643-77:
(8*1)+(7*5)+(6*6)+(5*6)+(4*4)+(3*3)+(2*7)+(1*7)=155
155 % 10 = 5
So 156643-77-5 is a valid CAS Registry Number.

156643-77-5Downstream Products

156643-77-5Relevant articles and documents

Self-condensation of Arylthioacetamides: Novel Syntheses of 3-Aminothioarylamides, 2,4-Diaminothiophenes and Four-membered-ring Vinamidinium Salts

Rolfs, Andreas,Liebscher, Juergen

, p. 1437 - 1438 (1994)

Self-condensation of arylthioacetmorpholides 1 in the presence of N,N-disubstituted amides 2 and POCl3 gave 2-aryl-3-benzyl-3-morpholinothioacrylamides 4, which were converted to four-membered-ring vinamidinium salts 5 or 2,4-dimorpholino-3,5-diarylthiophenes 6 by novel synthesis of the thiophene ring.

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