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21250-85-1

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21250-85-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21250-85-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,5 and 0 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21250-85:
(7*2)+(6*1)+(5*2)+(4*5)+(3*0)+(2*8)+(1*5)=71
71 % 10 = 1
So 21250-85-1 is a valid CAS Registry Number.
InChI:InChI=1/C5H11NO2/c1-4-8-5(2)6-7-3/h4H2,1-3H3

21250-85-1Relevant articles and documents

ETHYL-(R)-(4-METHYLPHENYLSULFINYL)-N-METHOXY ACETIMIDATE, A USEFUL CHIRAL ACETATE EQUIVALENT IN ALDOL TYPE CONDENSATIONS.

Bernardi, Anna,Colombo, Lino,Gennari, Cesare,Prati, Laura

, p. 3769 - 3776 (2007/10/02)

Ethyl N-methoxyacetimidate was metallated by lithium amides and reacted with (-)-(S)-menthyl p-toluenesulfinate to afford, in excellent yield, (R)-(4-methylphenylsulfinyl)-ethyl-N-methoxy acetimidate (2).Compound (2) was tested in aldol-type condensations

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