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15440-34-3

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15440-34-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15440-34-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,4,4 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 15440-34:
(7*1)+(6*5)+(5*4)+(4*4)+(3*0)+(2*3)+(1*4)=83
83 % 10 = 3
So 15440-34-3 is a valid CAS Registry Number.

15440-34-3Downstream Products

15440-34-3Relevant articles and documents

Degradation of penicillin G methyl ester and penillonic acid methyl ester to D-5,5-dimethyl-delta2-thiazoline-4-carboxylic acid methyl ester.

Bell,Carlson,Oesterlin

, p. 2177 - 2178 (1970)

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A new method for preparing D-penicillamine. Reaction of benzylpenicilloic acid α-amides with arylamines

Ogawa,Tomisawa,Sota

, p. 1957 - 1962 (2007/10/02)

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Studies related to Penicillins. Part 20. The Mechanism of the Rearangement of Methyl Benzylpenicillinate to Methyl Benzylpenillonate

Sharma, Rajiv,Stoodley, Richard J.

, p. 2001 - 2008 (2007/10/02)

In boiling benzene containing a trace of iodine, methyl benzylpenicillinate (1) isomerises to methyl benzylpenillonate (10a).The rearrangement is triggered by a 4,7-bond cleavage of the penicillinate (1a) and probably involves the formation of methyl (4S)

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