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81846-56-2

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81846-56-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81846-56-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,4 and 6 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81846-56:
(7*8)+(6*1)+(5*8)+(4*4)+(3*6)+(2*5)+(1*6)=152
152 % 10 = 2
So 81846-56-2 is a valid CAS Registry Number.

81846-56-2Downstream Products

81846-56-2Relevant articles and documents

Preparation of D-galactofuranosyl nitromethanes: A revision and a new approach

Vojtech, Michal,Petru?ová, Mária,Valent, Ivan,Pribulová, Bo?ena,Petru?, Ladislav

experimental part, p. 715 - 721 (2011/05/06)

Sodium methoxide-promoted methanolysis of 7-deoxy-7-nitro-l-glycero-l- galacto-heptitol peracetate rapidly and nearly quantitatively accumulates 7-deoxy-6-O-methyl-7-nitro-l-glycero-l-galacto-heptitol. The prolonged treatment then provides 76% of d-galactofuranosyl nitromethanes and finally results in the equilibrium of 77% of β-d-galactopyranosyl nitromethane and 7-9% of three other tautomeric d-galactosyl nitromethanes. Thermal treatment of 7-deoxy-7-nitro-l-glycero-l-galacto-heptitol in boiling water peaks at a 58% content of d-galactofuranosyl nitromethanes and ends in a similar equilibrium mixture of four d-galactosyl tautomers. The relevant kinetic parameters of the latter transformation are determined by a curve fitting using the nonlinear least-squares Marquardt-Levenberg algorithm.

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