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ORGANIC SPECTROSCOPY

Read all about Organic Spectroscopy on ORGANIC SPECTROSCOPY INTERNATIONAL 

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DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with GLENMARK PHARMACEUTICALS LTD, Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 30 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, Dr T.V. Radhakrishnan and Dr B. K. Kulkarni, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 30 year tenure till date Dec 2017, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 9 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 50 Lakh plus views on dozen plus blogs, He makes himself available to all, contact him on +91 9323115463, email amcrasto@gmail.com, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 19 lakh plus views on New Drug Approvals Blog in 216 countries......https://newdrugapprovals.wordpress.com/ , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc

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Methyl (S)-aminobutyrate hydrochloride…..Levetiracetam intermediate


Methyl (S)-aminobutyrate hydrochloride…..Levetiracetam intermediate

(s)-2-aminobutyric Acid Methyl Ester
PATENT

http://www.google.im/patents/WO2003014080A2?cl=en

(S)-amino butyric acid
Step 1 – Synthesis of methyl (S)-aminobutyrate hydrochloride

……………………………(23) …………………………………………………….(24)
5.0g of (S)-amino butyric acid (23) was suspended in 50 ml of methanol and stirred at 0-5°C. 6.35g of thionyl chloride was added dropwise over 45 min to form a clear solution. After stirring for 20 hours at room temperature, the reaction was concentrated under reduced pressure to dryness and the almost colourless residue solidified to give the required product which was dried in an oven at 50°C under vacuum (7.6g; 102% crude yield). The same reaction was scaled-up from 200g of the amino acid and provided 296g (99.5% yield) of product (24). Analysis gave the following results:
1H NMR (DMSO-de) : d 0.94 (3H, t) 1.88 (2H, q) 3.75 (3H, s) 3,9 (1H, m) 8,8
(3H, m). m.p. : 107°C-110°C IR : 2876 cm 1, 1742 cm 1.
TLC : Si02, 20%MeOH/80%EtOAc/ l%NH OH, UV & IR. (TLC is an abbreviation for thin layer chromatography).
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1H NMR PREDICT
(S)-2-aminobutyric acid methyl ester NMR spectra analysis, Chemical CAS NO. 15399-22-1 NMR spectral analysis, (S)-2-aminobutyric acid methyl ester H-NMR spectrum
13C PREDICT
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(S)-2-aminobutyric acid methyl ester NMR spectra analysis, Chemical CAS NO. 15399-22-1 NMR spectral analysis, (S)-2-aminobutyric acid methyl ester C-NMR spectrum
P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent.
P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent.
P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent.




COCK WILL TEACH YOU NMR
COCK SAYS MOM CAN TEACH YOU NMR

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  JALGAON, MAHARASHTRA, INDIA

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MANUDEVI

(S)-2-amino-butanamide hydrochloride………. Key intermediate of Levetiracetam


(S)-2-amino-butanamide hydrochloride………. Key intermediate of Levetiracetam

(S)-2-amino-butanamide hydrochloride

Key intermediate of Levetiracetam

  • CAS Number 7682-20-4
  • Linear Formula CH3CH2CH(NH2)CONH2 · HCl
  • Displaying
Stage B
(S)-2-aminobutyramide hydrochloride Preparation

Into the above (S)-2-aminobutyric acid methyl ester hydrochloride is added Isopropanol is then added, followed by the introduction of ammonia gas at a pressure about 60 psi (413 kPa) until the reaction is complete. After filtering to remove formed ammonium chloride, the solvent is partially evaporated and isopropanol hydrochloride is added. The mixture is stirred while solid product forms, then the solid is separated by filtration and washed with isopropanol.

The product was characterized by the following 1H NMR data (200 MHz, DMSO-d6): 0.9-1.0(t,3H), 1.8-1.9(Q,2H), 3.7-3.8(t, 1H), 7.5-7.7(Br,NH2), 8.0-8.2(Br,NH2)
1H NMR PREDICT
  • (2S)-2-aminobutanamide,hydrochloride NMR spectra analysis, Chemical CAS NO. 7682-20-4 NMR spectral analysis, (2S)-2-aminobutanamide,hydrochloride H-NMR spectrum

………..

13C NMR PREDICT

(2S)-2-aminobutanamide,hydrochloride NMR spectra analysis, Chemical CAS NO. 7682-20-4 NMR spectral analysis, (2S)-2-aminobutanamide,hydrochloride C-NMR spectrum

P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent.
P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent.
P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent.



COCK WILL TEACH YOU NMR
COCK SAYS MOM CAN TEACH YOU NMR

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TIRUPATI, INDIA
Map of tirupati town.

Tirupati
తిరుపతి
City
Clockwise from top: Tirumala Venkateswara Temple, Tirumala ghat road, City skyline and Chandragiri fort

Clockwise from top: Tirumala Venkateswara Temple, Tirumala ghat road, City skyline and Chandragiri fort
Tirupati is located in Andhra Pradesh

Tirupati
Tirupati

Location in Andhra Pradesh, India

Coordinates: 13.65°N 79.42°ECoordinates: 13.65°N 79.42°E
Country India
State Andhra Pradesh
Region Rayalaseema
District Chittoor
Government
 • Member of Parliament Varaprasad Rao Velagapalli
Area
 • City 24 km2 (9 sq mi)
Elevation 161 m (528 ft)
Population (2011)[1]
 • City 287,035
 • Density 12,000/km2 (31,000/sq mi)
 • Metro[2] 459,985
Languages
 • Official Telugu
Time zone IST (UTC+5:30)
PIN 517501
Telephone code +91–877
Vehicle registration AP 03
Website Tirupati Mucnicipal Corporation

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Kapila Theertham in Tirupati



Food Service During Tirumala Tirupati Devastanam’s ‘Srinivasa Kalyanam Utsavam’ at MARG Swarnabhoomi

 

 

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