57623-12-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57623-12-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,2 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57623-12:
(7*5)+(6*7)+(5*6)+(4*2)+(3*3)+(2*1)+(1*2)=128
128 % 10 = 8
So 57623-12-8 is a valid CAS Registry Number.
57623-12-8Relevant articles and documents
INDOLYLS. SYNTHESIS OF DI(5-INDOLYL) OXIDE
Samsoniya, Sh. A.,Tabidze, D. M.,Suvorov, N. N.
, p. 45 - 49 (1981)
Bis(2-carbethoxy-5-indolyl) oxide was obtained by cyclization of ethyl pyruvate 4,4'-diphenyloxydihydrazone. 5-Phenoxy-2-carbethoxyindole was also isolated from the reaction products.Saponification of these sters gave the corresponding acids, the thermal