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57904-79-7

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57904-79-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57904-79-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,9,0 and 4 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57904-79:
(7*5)+(6*7)+(5*9)+(4*0)+(3*4)+(2*7)+(1*9)=157
157 % 10 = 7
So 57904-79-7 is a valid CAS Registry Number.

57904-79-7Relevant articles and documents

Direct Formation of the Steroid Nucleus by a Biomimetic Cyclization

Johnson, William S.,McCarry, Brian E.,Markezich, R. L.,Boots, Sharon G.

, p. 352 - 359 (2007/10/02)

The aim of this study was to synthesize the trienynol 3 and to study its cyclization.The substrate was synthesized by a convergent route, the key step being the stereoselective Wittig-Schlosser condensation of the known aldehyde 19 with the phosphorane 18

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