57050-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57050-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,5 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57050-20:
(7*5)+(6*7)+(5*0)+(4*5)+(3*0)+(2*2)+(1*0)=101
101 % 10 = 1
So 57050-20-1 is a valid CAS Registry Number.
57050-20-1Relevant articles and documents
New derivatives of 6-phenylcomanic acid
Usachev,Obydennov,Kodess,Roeschenthaler,Sosnovskikh
experimental part, p. 1248 - 1252 (2010/10/04)
Ethyl 6-phenylcomanic acid with hydrazine hydrate and hydroxylamine gives 4-oxo-6-phenyl-4H/-pyran-2-carbohydrazide and 4-oxo-6-phenyl-4H-pyran-2- carbohydroxamic acid, whereas 6-phenylcomanic acid with ammonia in aqueous DMSO gives 4-hydroxy-6-phenylpico