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77222-54-9

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77222-54-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77222-54-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,2 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77222-54:
(7*7)+(6*7)+(5*2)+(4*2)+(3*2)+(2*5)+(1*4)=129
129 % 10 = 9
So 77222-54-9 is a valid CAS Registry Number.

77222-54-9Relevant articles and documents

CLAISEN ORTHO ESTER REARRANGEMENT WITH TRIMETHYL β-(METHOXY)ORTOPROPIONATE: A TERMALLY STABLE SYNTHON FOR THE PREPARATION OF METHYL α-SUBSTITUTED ACRYLATES

Raucher, Stanley,Macdonald, James E.,Lawrwence, Ross F.

, p. 4335 - 4338 (2007/10/02)

Trimethyl β-(methoxy)ortopropionate, a compound which is thermally stable at 190 deg C for proplonged times, may be utilized as a synthon for the preparation of methyl α-substituted acrylates via Claisen ortho ester rearrangement with allylic alcohols followed by β-elimination of methanol with base.

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